Will Smith's family has a sugar craving gene.

The 51-year-old actor and his family - including wife Jada Pinkett Smith, and their two children Jaden, 21, and Willow, 19, as well as Will's son Trey, 27, from a previous marriage - all tested positive for a particular gene which means they are more likely to 'become overweight and diabetic' if they gorge on too many sugary snacks.

In a preview clip for the latest episode of Jada's Facebook Watch show 'Red Table Talk', Doctor Mark Hyman tells the family: 'One of the things that we found was you all have genes that make you more likely, if you eat a lot of starch and sugar, to become overweight and diabetic. You also have genes that make you crave sugar, that make you want to snack.'

The news came as a shock to the family, with Willow exclaiming she was swearing off starch-based foods. But the doctor went on to explain that the gene poses bigger health risks, as their health could be in jeopardy if they don't look after their bodies.

He added: 'That's a big problem because African-Americans are twice as likely to get diabetes, they're four times likely to get...