Why a fat brain made us more vulnerable to heart disease

Natural selection granted us large brains. The evolutionary cost is having to feed them. The human brain’s high-energy demands led to development of a strong preference for fat. We consume more fat than any other primate on average. We are also adapted to more easily digest and metabolize fats. There are two major kinds ofContinue reading “Why a fat brain made us more vulnerable to heart disease”

How diet shaped human evolution

Anyone who is keenly interested in having a better understanding of why we eat what we eat as human beings should take an hour or so to watch this introductory talk given by anthropologist Teresa Steele, of UC Davis, given at the California Academy of Sciences on the topic of evolution of the human diet. I foundContinue reading “How diet shaped human evolution”

What happens on a high omega-6 diet

A while back I wrote a review of Queen of Fats: Why Omega-3s Were Removed from the Western Diet and What We Can Do about Them. Susan Allport’s book goes into the history of how omega-3s were discovered and what they’ll mean for us in the future. A controversial topic of the book is how omega-6 (king)Continue reading “What happens on a high omega-6 diet”

Assessment: n-3 fatty acids and cognitive decline study

Purpose of study: Observe how plasma n-3 fatty acids affect risk of cognitive decline in older adults. Research methodology: Prospective human observational cohort study Description: Beydoun et al (1) analyzed plasma fatty acids in cholesteryl esters and phospholipids in 2,251 white women and men ages 50-65 from 1987 to 1989 in a community in Minneapolis,Continue reading “Assessment: n-3 fatty acids and cognitive decline study”