Mar

11

Various 2012 studies further clarified how excessively sweet, unhealthy foods affect the brain. An animal study out of UCLA found that diets high in fructose can impair cognitive function, which is reversible with omega-3 fatty acid supplementation. High fructose consumption can induce some signs of metabolic syndrome in the brain and can disrupt the signaling of the insulin receptors and reduce the action of insulin in the brain. Other work published in JAMA suggests that fructose consumption modulates the neurophysiologic pathways involved in appetite regulation and encourages overeating. An October 2012 study published in the Journal of Alzheimer’s Disease reported that a diet high in carbohydrates and sugar raises the risk for mild cognitive impairment in the elderly, while a diet high in fat and protein may reduce this risk. Logical yet simple enough, an “optimal balance” of carbohydrates, fat, and protein may help maintain neuronal integrity and optimal cognitive function, particularly in the elderly.

Mounting evidence in 2012 reinforces that high consumption of red meat increases stroke risk. The largest meta-analysis to date looking at the atherogenic effects of red meat found that the risk for total stroke increased by up to 13% for each increase in a single serving of fresh, processed, and total amount of red meat consumed per day. Earlier in the year another study found that processed and unprocessed red meat is associated with a higher risk for stroke, while poultry was associated with a reduced risk. One study found that a diet high in fruits, vegetables, grains, and fish led to a 30% lower depression risk compared with a meat based diet. But, as pointed out last year, meat quality is a factor: Moderate consumption of unprocessed, free-range antibiotic free red meat may actually protect against depression and anxiety. Much of the livestock in the United States is raised on industrial feedlots, which increases saturated fat and decreases very important good fatty acids, whereas pasture-raised animals have a much healthier fatty acid profile.

Information derived from Medscape.

 

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  1. Beverly PetersMarch 11, 2013 @ 1:31 pmReply

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    Beverly Peters



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