Does anyone know if antibiotics cause Water retention or something? I've gained a pound and a half since I started some.

Some can, I find that drinking more water than normal while on certain antibiotics helps.

No not normally.

So I had to do some research here because I was on program and the day after I started antibiotics I gained weight. It's not Water retention. The articles I read indicate that antibiotics mess around with the bacteria composition of the gut and could cause weight gain.

Interesting info. I was having the same issue awhile back and had read histamines created by poor digestion and the antibiotics and it had suggested taking in Probiotics, as well as dehydration while on the antibiotics can cause Water retention and drinking more water will help. What did you find for suggestions for helping the bacterial composition?

I didn't find any suggestions. According to what I read antibiotics kill all bacteria including the good bacteria in your digestive system. The article was about how the future may hold a probiotic that targets weight loss. The article referenced how they feed animals antibiotics to help them build fat. The bottom line or better yet, my conclusion from what I read is that antibiotics throw things off. My plan is to take a probiotic asap, drink more Water and stick with it.

Sounds like a good plan!

I didn't find any suggestions. According to what I read antibiotics kill all bacteria including the good bacteria in your digestive system. The article was about how the future may hold a probiotic that targets weight loss. The article referenced how they feed animals antibiotics to help them build fat. The bottom line or better yet, my conclusion from what I read is that antibiotics throw things off. My plan is to take a probiotic asap, drink more Water and stick with it.

I read the same article - in The Wall Street Journal, I think. Very informative. Apparently, skinny people have different gut bacteria than fat people. Our antibiotic use (in the raising of animals for food and in combating human infections) has limited the number and kind of intestinal bacteria we now have. The article also said that the people with the most varities of intestinal bacteria were found deep in the Brazilian jungles. The "benefits" of civilization - antibiotics among them - have not reached them yet. It is good to see that scientists are investigating the things that make us fat, besides our overeating. Also: I was not given any antibiotics after my operation. That surprised me a bit, but it testifies to the clenliness of the surgeon, the procedure and the hospital.