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Does A Yogurt A day Keep Diabetes Away?

A high intake of yogurt has been found to be associated with a lower risk of developing type 2 diabetes, according to research published in open access journal BMC Medicine. This highlights the importance of having yogurt as part of a healthy diet.

Type 2 diabetes is a chronic condition that occurs when the body doesn’t produce enough insulin, or the body’s cells develop resistance to insulin. There is an increased risk of developing it if a relative has the condition or if an individual has an unhealthy lifestyle. Approximately 366 million people are affected by type 2 diabetes worldwide and it is estimated this will increase to 552 million people by 2030, which puts pressure on global healthcare systems.

Researchers from Harvard School of Public Health pooled the results of three prospective cohort studies that followed the medical history and lifestyle habits of health professionals. These studies were the Health Professionals’ Follow-up Study (HFPS), which included 51,529 US male dentists, pharmacists, vets, osteopathic physicians and podiatrists, aged from 40 to 75 years; Nurses’ Health Study (NHS), which began in 1976, and followed 121,700 female US nurses aged from 30 to 55 years; and Nurses’ Health Study II (NHS II), which followed 116,671 female US nurses aged from 25 to 42 years beginning in the year 1989.

At the beginning of each cohort study, participants completed a questionnaire to gather baseline information on lifestyle and occurrence of chronic disease. Participants were then followed up every two years with a follow-up rate of more than 90 per cent. Participants were excluded if they had diabetes, cardiovascular disease or cancer at baseline. People were also excluded if they did not include any information about dairy consumption. This left a total of 41,497 participants from HPFS, 67,138 from NHS and 85,884 from NHS II.

Mu Chen, the study’s lead author from Harvard School of Public Health, says: “Our study benefited from having such a large sample size, high rates of follow up and repeated assessment of dietary and lifestyle factors.”

Within the three cohorts 15,156 cases of type 2 diabetes were identified during the follow-up period. The researchers found that the total dairy consumption had no association with the risk of developing type 2 diabetes. They then looked at consumption of individual dairy products, such as skimmed milk, cheese, whole milk and yogurt. When adjusting for chronic disease risk factors such as age and BMI as well as dietary factors, it was found that high consumption of yogurt was associated with a lower risk of developing type 2 diabetes.

The authors then conducted a meta-analysis, incorporating their results and other published studies, up to March 2013, that investigated the association between dairy products and type 2 diabetes. This found that consumption of one 28g serving of yogurt per day was associated with an 18 per cent lower risk of type 2 diabetes.

Previous research has suggested calcium, magnesium, or specific fatty acids present in dairy products may lower the risk of type 2 diabetes. It has been shown that probiotic bacteria found in yogurt improves fat profiles and antioxidant status in people with type 2 diabetes and the researchers suggest this could have a risk-lowering effect in developing the condition. To confirm this observation, and investigate whether or not yogurt is causal in the lowering of risk, randomized controlled trials are needed.

Senior researcher on the study Frank Hu, Harvard School of Public Health, says: “We found that higher intake of yogurt is associated with a reduced risk of type 2 diabetes, whereas other dairy foods and consumption of total dairy did not show this association. The consistent findings for yogurt suggest that it can be incorporated into a healthy dietary pattern.”

Source: EurekAlert!

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Moderate Coffee Consumption May Lower the Risk of Alzheimer’s Disease by Up to 20 Percent

Drinking 3-5 cups of coffee per day may help to protect against Alzheimer’s Disease, according to research highlighted in an Alzheimer Europe session report published by the Institute for Scientific Information on Coffee (ISIC), a not-for-profit organisation devoted to the study and disclosure of science related to coffee and health.

The number of people in Europe aged over 65 is predicted to rise from 15.4% of the population to 22.4% by 20251 and, with an aging population, neurodegenerative diseases such as Alzheimer’s Disease are of increasing concern. Alzheimer’s Disease affects one person in twenty over the age of 65, amounting to 26 million people world-wide

Recent scientific evidence has consistently linked regular, moderate coffee consumption with a possible reduced risk of developing Alzheimer’s Disease. An overview of this research and key findings were presented during a satellite symposium at the 2014 Alzhemier Europe Annual Congress.

The session report from this symposium highlights the role nutrition can play in preserving cognitive function, especially during the preclinical phase of Alzhemier’s, before symptoms of dementia occur. The report notes that a Mediterranean diet, consisting of fish, fresh fruit and vegetables, olive oil and red wine, has been associated with a reduced risk for development of Alzheimer’s Disease. Research suggests that compounds called polyphenols are responsible for this protective effect, these compounds are also found in high quantities in coffee.

Epidemiological studies have found that regular, life-long moderate coffee consumption is associated with a reduced risk of developing Alzheimer’s Disease with the body of evidence suggesting that coffee drinkers can reduce their risk of developing the disease by up to 20%. A recent paper, suggested that moderate coffee consumption was associated with a lower risk of developing dementia over a four year follow-up period, however the effect diminished over longer follow up period.

Finally, the report explores the compounds within coffee, which may be responsible for this protective effect, identifying caffeine and polyphenols as key candidates. Caffeine helps prevent the formation of amyloid plaques and neurofibrulary tangles in the brain – two hallmarks of Alzheimer’s Disease. In addition to this, both caffeine and polyphenols reduce inflammation and decrease the deterioration of brain cells – especially in the hippocampus and cortex, areas of the brain involved in memory.

Dr. Arfram Ikram, an assistant professor in neuroepidemiology at Erasmus Medical Centre Rotterdam, presented his findings at the symposium. He commented: “The majority of human epidemiological studies suggest that regular coffee consumption over a lifetime is associated with a reduced risk of developing Alzheimer’s Disease, with an optimum protective effect occurring with three to five cups of coffee per day.”

Dr. Iva Holmerova, vice chairperson of Alzheimer Europe, commented: “The findings presented in this report are very encouraging and help to develop our understanding of the role nutrition can play in protecting against Alzheimer’s Disease. Coffee is a very popular beverage enjoyed by millions of people around the world and I’m pleased to know that moderate, lifelong consumption can have a beneficial effect on the development of Alzheimer’s Disease.”

Source: EurekAlert!

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