Not anymore than everyone else should be regardless of their weight. Studies show that fatness carries a heightened risk of disease but that does not mean the body or weight itself causes disease. In fact, there are no studies that show fatness causes disease, rather, studies show that weight and disease are correlated with each other.
When we consider that and see how similar research on the health of fat people is to people living in poverty, women or People of Color we see that the relationship or heightened risk of disease has more to do with the environments we live in. Fat people are more likely to live in poverty. Fat people are also more likely to be People of Color. Sociological literature about health disparities show that racism and classism have a HUGE impact on the level of health people are able to access due to the social constraints created by both of those systemic / institutional oppressions.
So am I “afraid” of health problems later in life? No. Right now I’m afraid of the lack of access I have to quality medical care. I’m afraid of how the stigma I am forced to navigate through impacts my physical and mental wellbeing. I’m afraid of people putting more emphasis on individuals transcending the constraints placed on us instead of creating a world where everyone has access to safe communities, equitable wages, fresh foods and stigma free medical care.
That’s what I’m afraid of.