This Week In Wellness research suggests that a diet low in protein and high in carbohydrates may be the key to living a long life, despite the fact that they led to weight gain and that previous idea on the benefits of caloric restriction may not, in fact, hold up.

Nutritional scientist Dr Samantha Solon-Biet suggests that the 2 million-plus Australians who go on a diet every year may be better off focusing less on low-carb, high-protein diets, unless their only goal is weight loss.

https://sydney.edu.au/research/research-impact/the-secret-to-healthy-ageing-is-a-low-protein-high-carb-diet.html

https://www.cell.com/cell-metabolism/fulltext/S1550-4131(14)00065-5

NB. In this episode, I misspoke when I suggested that historically many humans gained the majority of their energy from animal proteins. I should have said animal sources (this would have included fats and proteins even carbohydrates from dairy).