There are over 300 million people on Earth who are clinically obese. We travel the world to meet these people and discover what life is really like when you're more than six times heavier than the average human.
Mexico has the highest rate of childhood obesity in the world. The nation's heaviest man tries to educate Monterrey's youth on the perils of fast food. From Mexico to the USA where trucking is one of the fattest occupations, Attila Sarfi shows us how his addiction to food is putting his health in serious danger. Finally in India, a country with a growing obesity epidemic, 19-year-old Vedant Mungi is having surgery to remove up to 85% of his stomach in his quest for rapid weight loss.