>>149997105
Assuming it's not lies, Trump's reported height/weight has him classified as "overweight". Overweight elderly people actually tend to live longer: https://www.theguardian.com/society/2010/feb/14/elderly-overweight-lower-mortality-risk

Likely reason is that if you're overcoming some sort of illness it's good for your body to have a bit of extra fat to help get through the recovery process.