According to physical test records of Trump released in June of 2020 he weights around 244 pounds. During most of his 4 years Taft weight around 330 pounds.
Taft was clearly the heavier President, I am not so sure what he ate to get so fat, what we do know is that near the end of his life he regretted his fatness and contacted a British Doctor to help him lose weight, what he ate was recorded and monitored, and he began walking three miles from his home to the Capitol Building every day, and by 1929, the year before his death, his weight was 244 pounds, the same as Trump.
We have a more clear picture of what Trump ate to get fat, although he had kept a pretty stable and in-good-shape body for most of his life, around the 90’s he started eating so called trash food (more commonly burgers). In this picture here Trump was caught taking a burger, a coke, and some french fries aboard Air Force One before starting his work.
As if Trump will follow on Taft’s foot-steps and start a diet regime we aren’t sure, he might do it since he has all that free time at Mar-A-Largo now that he is a former President.