Latest Science

The latest scientific research on grains, cereals and the breakfast meal

 

At Kellogg, we are always up to date with the latest science, particularly the science related to the importance of breakfast, grains and breakfast cereals.
 

Here are some of the latest findings:


September 2018: Dietary Fibre Intake in Australia: Food Sources of Fibre among High and Low Fibre Consumers

 

Fayet-Moore et al. Dietary Fibre Intake in Australia. Paper II: Comparative Examination of Food Sources of Fibre among High and Low Fibre Consumers. Nutrients. 2018;10(9).

 

A study profiling the relationship between dietary food choices and fibre intake in Australia, based on the 2011-2012 NNPAS, shows energy-adjusted intakes of whole grain and / or high fibre grain (cereal) foods, vegetables and fruit were positively associated with a higher fibre intake. The difference in fibre intakes between the low and high fibre groups was explained largely by the intake of grain foods. Encouraging these foods as part of any public health intervention is likely to be effective for increasing dietary fibre intakes.

 

June 2018: Role of the gut microbiota in nutrition and health

 

Valdes, A. M., et al. (2018). "Role of the gut microbiota in nutrition and health." BMJ 361.

 

If you are after a good overview on the role of the gut microbiota in nutrition and health, this recent publication is an excellent place to start. Not only providing a glossary and examples of foods, nutrients and dietary patterns that influence human health through the gut microbiota, it also summarises 22 systematic reviews (313 trials; n=46 826) analysing the role of probiotics on clinical outcomes. It concludes that fibre is a key nutrient for a healthy microbiome and along with probiotics could benefit human health and potentially reduce obesity.

 

May 2018: Creation of a fibre categories database to quantify different dietary fibres

 

Fuller et al. Creation of a fibre categories database to quantify different dietary fibres. Journal of Food Composition and Analysis. 2018;71:36-43.

 

Researchers from the University of Wollongong have developed a Fibre Categories Database (FCD) with data on total, soluble and insoluble fibre content in a range of common foods. This may provide a useful tool to analyse the relationship between different types of fibre and health outcomes in the context of a whole diet.

 

May 2018: Human gut microbiome: hopes, threats and promises

 

Cani, P. D. (2018). "Human gut microbiome: hopes, threats and promises." Gut.

 

This perspective review critically analyses the current knowledge relating to the evidence of the impact of the gut microbiota on metabolic disorders. Despite a plethora of published papers on the gut microbiota (approximately 4000 papers in 2017 alone), it cautions against causally linking a bacterium to the protection or onset of a disease. In fact, many factors including dietary habits, drug treatments, intestinal motility and stool characteristics, and even the other archeae, viruses, phages, yeast and fungi present should also be considered. Thus, this area of research is not only currently blossoming, but we can still expect plenty of advancement.

 

May 2018: Dietary fibre intake in Australia

 

Fayet-Moore, F., et al. (2018). "Dietary Fibre Intake in Australia. Paper I: Associations with Demographic, Socio-Economic, and Anthropometric Factors." Nutrients 10(5).

 

The 2011-2012 National Nutrition and Physical Activity Survey was used to profile fibre intake among Australians and check for association with demographic, socio-economic and anthropometric factors. With a median fibre intake of 20.7g (adults) and 18.2g (children), less than a third (28.2%) of adults and less than half (42.3%) of children are meeting the NHMRC adequate intake (AI) target. Furthermore, less than 20% of adults met the Suggested Dietary Target to reduce the risk of chronic disease. Adolescents, girls, young adults, men and those of lower socio-economic status were less likely to meet recommendations.

 

May 2018: Dietary fibre intervention on gut microbiota composition in healthy adults

 

So, D., et al. (2018). "Dietary fiber intervention on gut microbiota composition in healthy adults: a systematic review and meta-analysis." Am J Clin Nutr 107(6): 965-983.

 

A systematic review and meta-analysis of 64 randomised controlled trials evaluating the effect of fibre on gut microbiota composition of 2099 healthy adult participants concluded that dietary fibre, particularly fructans and galacto-oligosaccharides, led to higher abundance of Bifidobacterium and Lactobacillus spp and fecal butyrate concentration. The intervention did not affect diversity of the gut microbiota or other SCFA concentrations.

 

April 2018: Dietary fibre for glycaemia control: Towards a mechanistic understanding

 

Goff et al. Dietary fibre for glycaemia control: Towards a mechanistic understanding. Bioactive Carbohydrates and Dietary Fibre. 2018;14:39-53.

 

This paper goes into the physiological mechanisms of dietary fibre effect on glycaemic control. It provides a useful resource outlining carbohydrate metabolism and blood glucose regulation, glucose dysregulation in diabetes, the role of dietary fibre in glucose regulation, the importance of viscous properties of dietary fibre in lowering postprandial glycaemia and the plausible mechanisms of postprandial glycaemia attenuation with dietary fibre consumption. The proposed mechanisms include delayed gastric emptying, hormonal regulation of digestion, alteration of digestive enzyme activity in the small intestine (amylolysis) and delayed glucose absorption. Each mechanism is detailed with supporting evidence.

 

April 2018: Mechanisms linking microbes, obesity and related disorders

 

Rastelli, M., et al. (2018). "Gut Microbes and Health: A Focus on the Mechanisms Linking Microbes, Obesity, and Related Disorders." Obesity (Silver Spring) 26(5): 792-800.

 

With over 10 000 papers published on the gut microbiota in three years, the level of knowledge on the topic is growing. This review looks into the complex pathways and key interactions, for example, the nervous and endocrine routes by which gut microbes communicate with the host. It also focuses on the key metabolites and their targets involved in the interactions, and highlights the role of metabolic endotoxemia in the onset of metabolic disorders.

 

March 2018: Complementary effects of cereal and pulse polyphenols and dietary fibre on chronic inflammation and gut health

 

Awika, J. M., et al. (2018). "Complementary effects of cereal and pulse polyphenols and dietary fiber on chronic inflammation and gut health." Food Funct 9(3): 1389-1409.

 

In this review, the authors highlight how the combination of whole grain cereals and pulses in the diet present an excellent opportunity to reduce inflammation and enhance health benefits by positively influencing the gut microbiome. This is due to the complementary nature of their flavonoid profiles, dietary fibre structure, and polyphenol constituents.

 

March 2018: Select group of gut bacteria which are promoted by dietary fibres alleviate type 2 diabetes

 

Zhao, L. et al., 2018. ‘Gut bacteria selectively promoted by dietary fibers alleviate type 2 diabetes’, Science, vol. 359, no. 6380, pp. 1151-1156.

 

A small (n=43) 12-week randomized, parallel-group trial in patients with type 2 diabetes (T2D) has identified a group of 15 acetate and butyrate producing bacteria that are promoted by a diet high in fibre.

Greater diversity and growth of these bacteria lead to improved HbA1c. Dietary fibres examined included whole grains, prebiotics and traditional Chinese medicinal foods (such as Tartary, buckwheat, oat, white bean, yellow corn, red bean, yam, peanut and lotus seed).

The study concluded that targeted promotion of these active SCFA producers via personalised nutrition may present a novel approach to managing T2D through gut microbiota manipulation.

 

February 2018: Cereal fibre, fruit fibre and Type 2 Diabetes

 

Davison K.M. & Temple, N.J. 2018, ‘Cereal fiber, fruit fiber, and type 2 diabetes: Explaining the paradox’, J. Diabetes and its Complications, vol. 32, no. 2, pp. 240-245

 

Evaluation of evidence from prospective cohort studies and randomized controlled trials indicates that (insoluble / non-viscous) cereal fibre is strongly protective against T2D(RR = 0.75; 95%; CI 0.65-0.86) whilst (soluble / viscous) fruit fibre gives weak protection (RR = 0.95; 95%; CI 0.87-1.03).

The Canadian researchers hypothesize the protective action of cereal fibre may be attributed to the modulating effects of gut microbiota through the following mechanisms:


  • Improved glucose tolerance via energy metabolism pathways.
  • Reduced inflammation.
  • Altered immune response.

 

Jan 2018: The cost of fibre inadequacy in Australia

 

Fayet-Moore, F., et al. (2018). "Healthcare Expenditure and Productivity Cost Savings from Reductions in Cardiovascular Disease and Type 2 Diabetes Associated with Increased Intake of Cereal Fibre among Australian Adults: A Cost of Illness Analysis." Nutrients 10(1): 34.

 

A cost of illness analysis was conducted to assess the potential savings in healthcare expenditure and productivity costs associated with lower prevalence of CVD and T2D resulting from increased intake of cereal fibre. The analysis involved modelling for three levels of increased dietary cereal fibre intake (10%, to the Adequate Intake, and to the Suggested Dietary Target). Total combined annual healthcare expenditure and productivity cost savings of AUD$17.8 million–$1.6 billion for CVD and AUD$18.2 million–$1.7 billion for T2D were calculated. Given the substantial savings that could be realised, interventions and policies that encourage an increase in cereal fibre intake in Australia should be developed.

 

January 2018: Relation of the gut microbiota in delivering whole grain benefits

 

Gong L. et al. 2018. ‘Whole cereal grains and potential health effects: Involvement of the gut microbiota’, Food Research International, vol. 103, pp. 84-102.

 

The objective of this study was to review the mechanisms by which whole grain cereals alter the gut microbiome composition and function.

The research concluded that whole cereal grains exert their beneficial health effects by resisting digestion in the upper GI tract and providing important fuel for the microbiota in the lower GI tract, and therefore:


  • Delivering a prebiotic effect which corrects ecological imbalance, and;
  • Providing substrates which produce metabolites such as SCFA's, phenolic metabolites and secondary bile acid. These metabolites can regulate appetite and energy homeostasis, lipid and glucose metabolism and alter inflammatory status.

 

December 2017: Whole grain and fibre intake strongly correlated with reduced obesity predictors

 

Celis-Morales, C., et al. 2018. ‘Correlates of overall and central obesity in adults from seven European countries: findings from the Food4Me Study’, European Journal of Clinical Nutrition, vol. 72, pp: 207–219.

 

A new cross-sectional analysis of data from 1441 participants in the Food4Me RCT conducted in seven European countries aimed to identify obesity predictors independent of other confounding factors (such as energy intake).

The research concluded the three strongest correlates of lower obesity were moderate physical activity, intakes of wholegrains and fibre (β: -1.36, −1.05, −1.02 kg/m2, respectively) [followed by fruits and vegetables, nuts and polyunsaturated fat (β: −0.52, −0.52 and −0.50 kg/m2, respectively)]. Conversely, age, processed meat and red meat were the strongest correlates of higher obesity (β: 1.11, 1.04 and 1.02 kg/m2 respectively).

 

August 2017: Poor appetite is linked to lower protein and fibre intake among the elderly

 

Van der Meij BS et al. Poor Appetite and Dietary Intake in Community-Dwelling Older Adults. J Am Geriatr. Soc. 2017 Jul 26.

 

A semi-quantitative frequency questionnaire designed to estimate dietary intake was distributed to 2,597 community-dwelling adults aged 70-79 with 21.8% reported a poor appetite. After adjustment for total energy intake and potential confounders, participants with a poor appetite had a significantly lower consumption of protein and dietary fibre but a higher consumption of dairy foods, fats, oils, sweets, and sodas compared to participants with very good appetite.

This information is important to help identify specific food preferences in older adults and can be used to refine nutrition interventions that aim to improve dietary intake and diet quality in older adults with a poor appetite

 

August 2017: How dietary fibre helps the intestines maintain health

 

Byndloss MX et al. Microbiota-activated PPAR-γ signalling inhibits dysbiotic Enterobacteriaceae expansion. Science. 2017 Aug 11; 357(6351):570-575

 

This new research identified the host receptor peroxisome proliferator receptor gamma (PPARg) as the regulator responsible for maintaining anaerobic environment where butyrate – producing bacteria thrive. When this host signalling pathway malfunctions, it leads to increased oxygen levels in the gut lumen which increases susceptibility to aerobic enteric pathogens such as Salmonella or Escherichia coli, which use oxygen to edge out competing beneficial microbes.

This research suggests that one of the best approaches to maintaining gut health might be to feed the beneficial microbes in our intestines dietary fibre, their preferred source of sustenance to help maintain an anaerobic environment and maintain gut health.

 

August 2017: Gut bacteria might be linked to anxiety feelings

 

Hoban AE et al. Microbial regulation of microRNA expression in the amygdala and prefrontal cortex. Microbiome. 2017 Aug 25; 5(1):102

 

Gut microbiota may act as a key regulator of the brain and behaviour. Compared with the conventional mice, the researchers found that the germ-free mice showed differences in 103 miRNAs in the amygdala - which is the brain region involved in emotional processing - and 31 changes in miRNAs in the prefrontal cortex (PFC) - which is the brain region involved in behaviour, planning, and impulse control, among other functions.

This study indicates that appropriate regulation of miRNA expression within the amygdala and PFC is influenced by microbiota composition and activity and relies on the presence of a functional microbiota during critical windows of neurodevelopment. The results further highlight that even following normal gut microbiome development, subsequent knockdown with antibiotics also impacts CNS miRNA expression.

 

August 2017: Regular breakfasts help children meet key nutrient target intakes

 

Coulthard JD et al. Breakfast consumption and nutrient intakes in 4–18-year-olds: UK National Diet and Nutrition Survey Rolling Programme (2008–2012). Br J Nutr. 2017 Aug 17:1-11

 

Data from the UK National Diet and Nutrition Survey were collected between 2008 and 2012 and nutrient daily intake was calculated for 802 children aged 4-10 and 884 young people aged 11-18. The study showed that as breakfast consumption increased, so did the proportion of children meeting their requirements for fibre, folate, vitamin C, calcium, iron and iodine. Breakfast skippers were more likely to shortfall on these nutrients. Younger children aged 4-10 and children from higher household incomes who eat daily breakfast were most likely to meet their requirements. No differences were seen between the different categories in term of obesity or overweight status.

 

July 2017: Eating more plant based protein may protect against early menopause

 

Boutot M.E. et al. Dietary Protein Intake and Early Menopause in the Nurses’ Health Study II .Am J Epidemiol. 2017 June 24

 

This study evaluated the relationship between diet and risk of early menopause among members of the Nurses' Health Study II (NHS2), an ongoing prospective study of 116,000 women aged 25-42 in 1989. It was observed that women consuming approximately 6.5 % energy from vegetable protein had a 16% lower risk of early menopause compared to women whose intake was approximately 4% of energy. The study results suggested that increasing intake of plant based protein from such foods as whole grains, soy and tofu may protect women from early menopause and could prolong reproductive function.

 

July 2017: Prebiotic corn fibre could help boost calcium absorption among adolescent girls

 

Whisner CM et al. Soluble Corn Fiber Increases Calcium Absorption Associated with Shifts in the Gut Microbiome: A Randomized Dose-Response Trial in Free-Living Pubertal Females. J Nut.2016 July

 

This randomised dose-response trial in 28 healthy adolescent females evaluated the effect of 0, 10, 20 g of soluble fermentable corn fibre /day on calcium absorption, biochemical bone properties and shift in faecal microbiome population diversity. The results showed a 12% increase in calcium reabsorption efficiency with a daily intake of 10 and 20 g soluble corn fibre and a modification of the microbiome diversity with an increase of two specific types of bacteria involved in calcium metabolism.

 

May 2017: Long term gluten intake in non-coeliacs not associated with risk of heart disease

 

Lebwohl et al. Long term gluten consumption in adults without celiac disease and risk of coronary heart disease: prospective cohort study. BMJ 2017; 357; j1892.

 

This research analysed diet and coronary heart disease data of 65,000 women in the Nurses’ Health Study and 45,000 men in the Health Professionals Follow-up Study, excluding anyone who had been diagnosed with coeliac disease, and investigated the impact of gluten consumption on heart disease risk.

 

The researchers found that there was no association between gluten intake and risk of coronary heart disease, defined as fatal or non-fatal heart attacks, and that limiting beneficial whole grains as part of a reduced-gluten diet could actually increase cardio vascular risk in people without coeliac disease.

 

May 2017: Gluten intake not associated with risk of Type 2 diabetes

 

Zong et al. Associations of gluten intake with Type 2 diabetes risk and weight gain in three large prospective cohort studies of US men and women. Circulation. 2017;135:A11.

 

Findings suggest that long term gluten intake may not exert significant adverse effects on the incidence of Type 2 diabetes or excess weight gain. Limiting gluten from diets is thus unlikely to facilitate diabetes prevention and furthermore may lead to reduced consumption of cereal fibre or whole grains that help reduce the risk of diabetes.

 

May 2017: Influence of diet on the gut microbiome and implications for human health

 

Singh et al. Influence of diet on the gut microbiome and implications for human health. Journal of Translational Medicine 201715:73

 

This research shows how diets are playing a significant role in shaping the microbiome, with experiments concluding that dietary alterations can induce large, temporary microbial shifts within 24h. The study also shows non-digestible carbohydrate diets that are rich in whole grain and wheat bran are linked to an increase in gut Bifidobacteria and Lactobacilli suggesting that diet can modify the intestinal microbiome, which in turn has a profound impact on overall health.

 

 

April 2017: Intestinal bacteria may protect against type 2 diabetes

 

Vanessa D. de Mello et al. Indolepropionic acid and novel lipid metabolites are associated with a lower risk of type 2 diabetes in the Finnish Diabetes Prevention Study. Sci Rep. Apr. 2017

 

This research from the University of Eastern Finland showed that a high concentration of indolepropionic acid in the serum could protect against type 2 diabetes. Indolepropionic acid is a metabolite produced by intestinal bacteria, and its production is boosted by a fibre-rich diet such as whole grains and high fibre food. A higher concentration of indolepropionic acid seemed to promote insulin secretion by pancreatic beta cells, which may explain the protective effect and produce new lipid metabolites that improve insulin resistance and lower inflammation.

 

 

April 2017: Short chain fatty acids may protect against type 1 diabetes

 

Eliana Mariño et al. Gut microbial metabolites limit the frequency of autoimmune T cells and protect against type 1 diabetes. Nature Immunology 18, 552–562 (2017)

 

This study showed that a diet generating high amounts of the short-chain fatty acids, acetate and butyrate provided a beneficial effect on the immune system and could protect against type 1 diabetes. This research found that feeding mice spontaneously develop type1 diabetes diets, high levels of acetate or butyrate improved the integrity of the gut lining, reduced pro-inflammatory factors, and promoted immune tolerance.

 

 

April 2017: Whole grains and milk may protect against colorectal cancer

 

Vieira AR. Et al. Foods and beverages and colorectal cancer risk: a systematic review and meta-analysis of cohort studies, an update of the evidence of the WCRF-AICR Continuous Update Project. Ann Oncol. 2017 Apr 12

 

As part of the World Cancer Research Fund International Continuous Update Project, 400 individual studies were included in a systematic review. The results show that a higher intake of red and processed meat and alcohol increase the risk of colorectal cancer. Milk and whole grains may have a protective role. Risk of developing colorectal cancer is decreased by 17% for each 90g/day increase of whole grains.

 

 

April 2017: Plant protein may protect against type 2 diabetes, meat eaters at greater risk

 

Virtanen HE et al. Intake of different dietary proteins and risk of type 2 diabetes in men: the Kuopio Ischaemic Heart Disease Risk Factor Study. Br J Nutr. 2017 Apr 11:1-12

 

A new study from the University of Eastern Finland adds to the growing body of evidence indicating that the source of dietary protein may play a role in the risk of developing type 2 diabetes. The results showed that men who had the highest intake of plant protein were at 35% lower risk of developing T2D compared with men who had the lowest intake of plant protein. The men with high intake of plant protein also led a healthier lifestyle.

 

 

March 2017: Clarity on trending cardiovascular nutrition controversies

 

Freeman AM et al. Trending Cardiovascular Nutrition Controversies. J Am Coll Cardiol. March 2017 doi: 10.1016/j.jacc.2016.10.086

 

This review from JACC addresses some of the most popular foods and dietary patterns that have received significant media interest for promoting cardiovascular health and to provide health professionals with accurate information for their patients. Available evidence supports cardiovascular benefits of nuts, olive oil and other vegetable oils, green leafy vegetables, plant-based diets and plant-based proteins such as from whole grains.

 

 

March 2017: Eating whole grain foods instead of refined grains can help maintain a healthy weight

 

Karl JP et al. Substituting whole grains for refined grains in a 6-wk randomized trial favourably affects energy-balance metrics in healthy men and postmenopausal women. Am J Clin. Nutr. March 2017. DOI: 10.3945/ajcn.116.139683

 

A 6-week randomised single- blind comparative study to analyse the effect of whole grains and high fibre intakes compared to refined grains only. Results showed that the group who consumed whole grains had increased resting metabolic rate and greater faecal energy losses. Furthermore, the increases in faecal energy losses were not related to the extra fibre intakes but from the effect of the fibre on the digestibility of other food calories.

 

 

March 2017: Clarity on trending cardiovascular nutrition controversies

 

Freeman AM et al. Trending Cardiovascular Nutrition Controversies. J Am Coll Cardiol. March 2017 doi: 10.1016/j.jacc.2016.10.086

 

This review from JACC addresses some of the most popular foods and dietary patterns that have received significant media interest for promoting cardiovascular health and to provide health professionals with accurate information for their patients. Available evidence supports cardiovascular benefits of nuts, olive oil and other vegetable oils, green leafy vegetables, plant-based diets and plant-based proteins such as from whole grains.

 

 

January 2017: Foods rich in resistant starch benefit health

 

Lockyer S and Nugent AP. Health effects of resistant starch. Nutrition Bulletin 2017 doi:10.1111/nbu.12244

 

The review summarises the potential mechanisms of action involved from food rich in resistant starch (RS) in postprandial glycaemia, satiety and gut health. There is consistent evidence that consumption of RS may be particularly helpful for managing diabetes by helping control blood sugar levels. It has also been suggested that RS can support gut health by modulating the composition of gut microbiota and enhance satiety via increased production of short chain fatty acids. There is some evidence that RS can counteract the detrimental effects of high red meat intake on colorectal cancer risk and emerging evidence of RS as an ingredient in oral rehydration solutions.

 

 

November 2016: Skipping breakfast and not enough sleep may cause children to become overweight

 

Y Kelly et. al. BMI Development and Early Adolescent Psychosocial Well-Being: UK Millennium Cohort Study. Pediatrics Nov 2016.DOI: 10.1542/peds.2016-0967

 

This observational study examined different predicting factors of children BMI development by collecting data of children born into 19,244 families in the UK. Measures of height and weight were collected at the age of 3, 5, 7 and 11 years old.

 

This study examined predicting factors of BMI development during the first 10 years of life and found that mothers smoking during pregnancy, children skipping breakfast and late bedtime or insufficient sleep could impact on their future BMI.

 

The study suggests that disrupted routines, illustrated by irregular sleeping patterns and skipping breakfast, could influence weight gain through increased appetite and over-consumption of energy-dense foods.                             

 

 

July 2016: Higher cereal fibre intake is associated with lower all-cause mortality

 

Hajishafiee et.al. Cereal fibre intake and risk of mortality from all causes, CVD, cancer and inflammatory diseases: a systematic review and meta-analysis of prospective cohort studies.
Br J Nutr. 2016; 116(2): 343-52. doi: 10.1017/S0007114516001938.

 

The systematic review and meta-analysis found a significant inverse association between cereal fibre intake and mortality from all-causes, CVD and cancer, but not from inflammation-related mortality.  Compared with the lowest category of fibre consumption, people with the highest consumption of cereal fibre had a 19% lower risk of all causes mortality, 18% lower risk of CVD and 15% lower risk of cancer.

 

  

June 2016: Higher wholegrain intake is significantly associated with lower risk of all-cause mortality.

 

Chen G-C et. al. Whole-grain intake and total, cardiovascular, and cancer mortality: a systematic review and meta-analysis of prospective studies. Am J Clin Nutr.  doi: 10.3945/ajcn.115.122432.

 

Higher intakes of whole grain or whole-grain products, compared to lower intakes, was significantly associated with an 11–18% lower risk of total or cause-specific mortality. When intake of whole grain products was converted to an estimated grams of whole grain (assuming 16g per serving), each 50-g/d increase in whole-grain intake was associated with 22%, 30%, and 18% lower risk of dying from any cause, CVD, and cancer, respectively. Risk reduction benefits were seen even at the lower ranges of whole grain intake suggesting that even adding small amounts of whole grain to the diet still has benefits.

 

 

May 2016: Cereal eaters are slimmer, have better nutrient and fibre intakes compared to skippers and those who eat other breakfasts.

 

http://www.cereal4brekkie.org.au/bowled-over-at-breakfast/

 

A recent analysis of the Australian Health Survey has shown that breakfast cereals are not the poor food choice they are made out to be. In fact, breakfast cereals make an important contribution to nutrient intakes, particularly for dietary fibre, calcium and iron- nutrients of which Australians are not getting enough. In addition, the total sugars in breakfast cereals account for less than two per cent of kilojoule intake in the diets of Australians who consume it. This adds to other recent data showing that breakfast cereal contributes less than 3% of our added sugar intake. The research also showed that the adults who ate breakfast cereals had slimmer waists and were more likely to be a healthy weight than people who ate other breakfasts. They also had lower sodium intakes and were more likely to meet their nutrient requirements.

 

 

February 2016: Eating breakfast is associated with increased physical activity and improved insulin sensitivity compared to skipping

 

E. A. Chowdhury et al. The causal role of breakfast in energy balance and health: a randomized controlled trial in obese adults. Am J Clin Nutrition 2016; DOI: 10.3945/ajcn.115.122044

 

This randomised control trial analysed the relationship between breakfast and health outcomes for obese individuals, comparing the results from a fasting group (breakfast skippers) with a breakfast group.

 

There were no differences in energy intake across the day which means that skippers were likely to make up for the calories later in the day and therefore there were no differences in weight status. However, obese individuals who ate breakfast had higher physical activity levels in the morning and reduced food intake later in the day.

 

This study also provides evidence that sustained daily breakfast omission affects some indexes of insulin sensitivity in obese individuals and adds to the body of evidence that breakfast consumption can maintain insulin sensitivity and glycaemic control.

 

 

December 2015: Breakfast cereal consumption associated with reduced risk of mortality

 

Xu M et al. Ready-to-Eat Cereal Consumption with Total and Cause-Specific Mortality:Prospective Analysis of 367,442 Individuals, J Am College Nutr. DOI:10.1080/07315724.2014.971193.

 

A recently published study from Harvard University has found that a regular breakfast cereal habit is associated with a reduced risk of death from chronic disease.

 

The research examined the diets of 367,442 people followed up after 14 years, as part of the prospective National Institutes of Health AARP Diet and Health Study.

 

The data showed that people with the highest intake of ready-to-eat breakfast cereals (22.5g/day, equivalent to four 40g serves a week) had the greatest risk reductions – 15% for all-cause mortality, 24% for cardiovascular disease, 13% for digestive cancer mortality and 10% for all cancer – compared to people who did not have ready-to-eat breakfast cereals. The researchers also found that among ready-to-eat breakfast cereal eaters, higher fibre intakes appear to be even more protective.

 

 

March 2015: Cereal fibre and whole grains associated with reduced risk of mortality

 

Huang et al. Consumption of whole grains and cereal fiber and total and cause-specificmortality: prospective analysis of 367,442 individuals. BMC Medicine 2015; 13:59 DOI10.1186/s12916-015-0294-7

 

Harvard researchers examined the diets of 367,442 people from the prospective National Institutes of Health – AARP Diet and Health Study, with an average follow-up period of 14 years.

 

The study showed that those with the highest cereal fibre intakes had a 19% reduced risk of death from all causes, 15% reduced risk of death from cancer and 34% reduced risk of death from diabetes.

 

In addition to the benefits of cereal fibre, the study reported that eating an average of 34g of whole grains a day was associated with a 17% reduced risk of death from all causes, an 11% reduced risk of death from respiratory disease and a 48% reduction in the risk of diabetes.

 

 

March 2015: Cereal grains associated with beneficial effects on plasma glucose and cholesterol levels

 

Singhal P & Kaushik G. Therapeutic effect of cereal grains – A review. Crit Rev Food Sci Nutr.2015; DOI: 0.10.1080/10408398.2012.714417

 

This paper aimed to review the antidiabetic and antilipidemic potential of cereal grains such as rye, barley, millet, sorghum, wheat, oats, rice, corn, sago and buckwheat. Forty-five articles were included in the final review, of which 20 were animal studies. All included studies demonstrated that cereal grains possess therapeutic properties and help in lowering blood glucose levels and/or maintaining blood cholesterol levels.

 

 

Feb 2015: Breakfast skipping related to an increased risk of type 2 diabetes

 

Bi H et al. Breakfast skipping and the risk of type 2 diabetes: a meta-analysis of observationalstudies. Public Health Nutr. 2015; 7:1-7.

 

This is the first meta-analysis of observational studies on breakfast skipping and the risk of type 2 diabetes mellitus (T2DM) and the results suggest that breakfast skipping is associated with a significantly increased risk of T2DM. Compared with individuals who consume breakfast regularly, the risk of T2DM was increased by 21% in cohort studies and 15% in cross-sectional studies for breakfast skippers. This significant positive association was also consistent in cohort studies after adjusting for confounding factors.

 

 

Jan 2015: Whole grain intake is associated with reduced risk of mortality

 

Wu H et al. Association between dietary whole grain intake and risk of mortality - Two large prospective studies in US men and women. JAMA Intern Med. 2015;175(3):373-384.

 

Higher whole grain consumption, with or without added bran or germ, was associated with lower mortality, especially deaths due to CVD, in US men and women, independent of other dietary and lifestyle factors. Every one-ounce serving of whole grains was associated with a 5% lower total risk of death, or a 9% lower risk of death from heart disease. Whole grain intake was not significantly associated with cancer mortality.

 

 

December 2014: Whole grains may be more protective against major chronic disease than fruits and vegetables

 

Fardet, A, Boirie, Y. Associations between food and beverage groups and major diet-related chronic diseases: an exhaustive review of pooled/meta-analyses and systematic reviews. Nutr Reviews. 2014. Vol 72 (12):741-762.

 

A comprehensive review of more than 300 meta-analyses and systematic reviews published over the past 60 years. The review found that whole grain products are more likely to be protective against type 2 diabetes, CVD and cancers than fruits and vegetables.

 

 

September 2014: Systematic review of the health benefits of breakfast cereal

 

Williams PG. The benefits of breakfast cereal consumption: A systematic review of the evidence base. Adv Nutr 2014; 5:636S-673S.

 

A systematic literature review conducted by Professor Peter Williams, showed that eating breakfast cereal is associated with several health benefits.

 

Breakfast cereal eaters have more nutritious diets and are more likely to be meeting recommended nutrient intakes than people who eat other options, or who have no breakfast at all.

 

Regularly eating breakfast cereal is associated with a lower BMI and a 12% lower risk of being overweight or obese and in both adults and children. Whole grain and high-fibre breakfast cereal is also associated with reduced risk of type 2 diabetes (24%) and cardiovascular disease (28%).

 

There was no difference in the weight status or energy intake of children who consume pre-sweetened breakfast cereal compared to those that don’t.

 

 

September 2014: Dietary fibre intake associated with reduced risk of mortality

 

Pilar Buil-Cosiales et al. Fiber intake and all-cause mortality in the Prevencion con Dieta Mediterranea (PREDIMED) study. Am J Clin Nutr 2014;100:1498–507.

 

This study investigated the association of fibre, whole-grain, fruit and vegetable intake with all-cause mortality in a Mediterranean cohort of elderly adults at high cardiovascular disease risk. Higher baseline intakes of fibre or fruit were inversely associated with all-cause mortality. Those with the highest fibre intakes (more than 20g per day) had a 37% reduction in risk of death.