Haha. I recently read that "keto crotch" is a musty smell some people get when they eat diets that cause ketones or something in the blood.

A bypass the surgery sounds difficult. And my impression is that a very low carb diet is not very healthy. Maybe focus on healthy carbs instead? It seems younare already doing that. I did read recently that intermittent fasting is good for you and helps gain muscle. I also love fast walking on a treadmill. I usually walk at 4.5 mph. Good luck with your fitness goals!