Did you know that some Arctic populations have survived for generations on almost entirely animal-based diets? The carnivore diet seeks to replicate this way of eating, but is it truly sustainable?

Meat enthusiasts have long endorsed the “carnivore diet,” a meal plan that includes consuming only animal products such as meat, dairy and eggs — but the program is frowned upon by some who embrace ...

For adults, a diet high in saturated fats and added sugar has been linked to impulsivity and poor self-control. But what role, if any, does diet play in adolescent psychological development?