I tried 16:8 for about 3 weeks and found that I was gaining lbs. was wondering if there’s any info on if it slows down your metabolism/ anyone has any advice?
Not over that short a period of time. Eventually the body will adjust to most anything, but on the whole IF is better for your metabolism. Some studies show there being a small boost to metabolism and it avoids some of the normal metabolic adaptation from eating at a deficit with insulin stopping fat usage.
No. At least, not in the way you’re thinking.
Any major weight loss will result in your metabolism slowing simply because you’re body doesn’t need to get energy to all those fat cells. And fast cells require energy, so having fewer of that that need it means your body doesn’t have to work to feed them.
As for weight gain, it’s usually a calorie issues, as in you’re just overeating. It it’s not that, then it could be a hormone issue and you should get bloodwork done from your doctor.