The OP implies that it is sudden weight gain and not related to lifestyle.
So, working with that assumption, the two most likely culprits is their gut bacteria and thyroid.
Nothing besides caloric intake can explain 250-300 pounds weight increase
I’ve seen fluid retention do 70 and lasix zapped it in days in the hospital
Freepers are super prone as I stated to blame anything but eating for obesity I’ve seen
Not me
I get fat cause I like food
Going back to the post it looks like they blame water retention
Which is possible I guess but boy that’s a whole lot
Someone should be able to figure why
“So, working with that assumption, the two most likely culprits is their gut bacteria and thyroid.”
Interesting that you can give a diagnosis without seeing him when multiple doctors who have seen and tested him disagree with you.