In simple terms, the diet requires people to cut out most carbs and instead live on a diet of protein and fat. The idea is that the body uses fat as its biggest source of fuel, breaking it down into ketones in a process known as ketosis.

With an array of fad diets saturating the weight loss market, health experts are divided about whether the Keto diet actually does wonders for health, with some questioning the effectiveness of the diet.

Starts at 60 spoke to two leading nutritionists about the diet, it’s potential benefits and whether it’s safe for over-60s to practice.