A doctor who says he's reversed his age by 20 years eats these 7 foods every week to boost his longevity

• Dr. Michael Roizen is an expert in longevity and uses scientific research to shape his lifestyle.
• He shared the foods he added to his diet that are linked to a longer lifespan.
• These include dark chocolate, salmon, olive oil, and avocados.

A doctor who claims to have reversed his age by 20 years shared the foods he eats weekly in a bid to boost his longevity.