Sirtfoods stimulate sirtuin genes, which are said to influence the body's ability to burn fat and boost the metabolic system.
The Sirtfood diet is based on two stages; Stage one is an intensive seven-day program designed to kick-start your intense weight loss.
Then stage two is about upping the quantity of Sirtfood-rich produce in your everyday meals to maintain weight loss.
Unlike many other short-term yo-yo diets, the Sirtfood plan includes meals and advice.