What kind of negative health risks are you thinking of?
I understand that you're seeking any research done to maintain obesity but many of the health risks are due to the bodies incapabilities to endure such a lifestyle.
On a more positive note people can be happier with this lifestyle far more than they could ever be in a healthier state. Sure there are risks but people take millions of risks in their life just crossing a road, driving a car or going outside.
'The candle that burns twice as bright burns half as long' as they say
I understand that you're seeking any research done to maintain obesity but many of the health risks are due to the bodies incapabilities to endure such a lifestyle.
On a more positive note people can be happier with this lifestyle far more than they could ever be in a healthier state. Sure there are risks but people take millions of risks in their life just crossing a road, driving a car or going outside.
'The candle that burns twice as bright burns half as long' as they say

13 years