Since it was only introduced into the public consciousness last year, you are not forgiven for not knowing what a "sirtfood diet" is! After some endorsements from celebrities around the world, the diet has climbed both in popularity and fame, even breaking the Keto diet and the Dukan diet.

Recently, the diet became popular when Adele was reported to have followed it, leading to a noticeable weight loss. Despite its supposed effectiveness, nutritionists have warned of the limiting nature of the diet.

The Sirtfood diet strives to increase foods that activate the proteins for weight loss in your body, called 'sirtuins'. "According to researchers, these special foods work by activating specific proteins in the body called sirtuins," says Rick Hay of the Healthista channel. "This set of proteins regulates some important functions in the body. Studies suggest that green foods can push the body to produce more of these proteins.

If you are wondering what are the 20 'live foods' allowed in the diet, they are mostly natural foods rich in antioxidants. Strawberries, blueberries, apples, citrus fruits, nuts, parsley, kale salads, capers, green tea, soy, turmeric and black chocolate are some of the best foods you can eat to promote weight loss.

Sirtfood's diet is very restrictive and less balanced than Keto or Paleo. It focuses on calorie counting and requires you to cut down on the main food groups. You will also need to reduce your portions, especially in the second week. The negative is that the diet has no essential nutrients like calcium and iron.

The 'Sirtfood Diet' is also best for anyone who has struggled with eating disorders in the past, so it works not just to weaken!