Debate on the best possible human diet is unlikely ever to be resolved. But the most striking thing about human diets is just how variable they have been and the adaptations that have taken place through humankind's evolution.
For almost 50 years, the US National Health and Nutrition Examination Survey (NHANES) has measured the caloric consumption, and body heights and weights of Americans. A new review of its data published in the journal Nutrition firmly points the finger at the US's dietary guidelines that villified fat and massively upweighted carb intake as the key cause of its obesity pandemic.
The protein and amino acid supplement market is big business. Bars, shakes, giant tubs of powder and specialist amino acid supplements dominate supplement shelves. But the decision to use them is based more on slick marketing claims than anything else; protein supplements offer few real performance benefits that an athlete’s normal diet isn’t already delivering.
The human default response to gluten is to treat it as the harmless protein it is — to not respond. So the real mystery of coeliac disease is what breaks that tolerance, and whatever that agent is, why has it become more common in recent decades? This article investigates...