Anyone tried fasting on GLP1s?

Yes, it's much easier on these meds. I do at least 24-hour fasts two or three times a week and feel great. I can stretch to 48 hours or more when it seems useful. On non-fasting days I usually eat one meal a day.

I recently finished a three-day fast and felt okay throughout. I also do daily intermittent fasting, usually waiting 16 to 18 hours between meals.

I fasted before starting the medication, but now I'm worried about it because I already have trouble eating enough to keep up with my activity. I've run out of energy mid-day before when I under-ate. It's strange that fasting used to be easy for me but feels different now.

I've been fasting for fifteen years by skipping food until noon and eating once or twice daily. The GLP meds make it even simpler, though I rarely feel real hunger anyway.

I did intermittent fasting the whole time I was working toward my goal weight using an 8/16 schedule. The medication made the 8 pm to noon window easy. I still have coffee with cream after lunch and sometimes mix in a vanilla protein shake.

I haven't tried a full water fast yet on these meds, but I keep a four-to-six-hour eating window most days and it's fine. I've been doing intermittent fasting for about ten years mainly for schedule reasons. I actually think the meds help prevent overeating when you break a fast because you get full quickly after a few hundred calories.

I've been doing it daily from 5 am until noon for the past three weeks. It really starts the night before, so basically 10 pm to noon.

I used to do 24-to-48-hour fasts weekly for months, but once I started the GLP meds fasting became harder even though I fill up faster. I still need to eat at least twice a day. I suspect the glucagon is the reason.

I kept fasting for over a year because it was the only way I could avoid gaining weight too quickly. After some time on maintenance I slowly added small morning items and didn't gain. I was very strict before the meds and wouldn't even have coffee with creamer during the fast. Now I eat when I'm hungry and add calories to my coffee most days. I still avoid big morning or lunch meals so I have room for dinner. On vacation I'll have one big breakfast but otherwise I don't stress about staying in ketosis.

I end up fasting but not on purpose because the medication makes me have to remind myself to eat. With a history of bariatric surgery and malabsorption, fasting too long risks missing nutrients. It has become very easy to skip meals but it leaves me drained.

I fast every day for at least sixteen hours, usually around eighteen. I focus on protein and complex carbs because fitting everything into the eating window is tough otherwise. I've been doing intermittent fasting off and on since 2016, so combining it with the meds feels straightforward. Bloodwork is the real measure of whether it's working.

I did intermittent fasting and strict keto before the GLP-1s, but on tirzepatide I had to make myself eat so I wouldn't lose weight too fast. Losing more than two pounds a week or one percent of body weight is usually the edge of healthy loss. The one I would avoid fasting on is retatrutide because the glucagon effect could push the body into starvation mode or even ketoacidosis.

That's interesting. I'll update everyone if anything goes wrong. I don't think a daily intermittent fast with proper meals would cause problems. Back in 2016 people warned me intermittent fasting would kill me, but my bloodwork stayed excellent. Prolonged fasting might be different, but I'm not worried about the daily version.

Fasting worked well for me early on tirzepatide and helped drop the first chunk of weight with an 18/6 schedule. Just remember to watch muscle loss because it can happen quickly. I think fasting in cycles is useful, but then eating enough protein and training hard several days a week is important so you don't end up with sagging skin or face.

I'm currently doing intermittent fasting and some of the experiences shared here make me look forward to continuing.

Tomorrow I'm having an early dinner, then taking my weekly retatrutide dose Saturday morning and trying to fast until sometime Sunday. I might add a MOT-C dose and do a fasted gym session. This time I'm lowering caffeine to just one earl grey tea a day so it will be a pure water fast.

I've done intermittent fasting on and off, eating from around noon to 7 pm. I'm about to start retatrutide and keep hearing I need lots of protein. I'm wondering if I should drop the fasting because fitting enough protein into those seven hours feels difficult while working.

I've never been much of a breakfast person so I've naturally done 16-to-18-hour fasts most of my life. I used to do 24-to-36-hour fasts a few times a week before tirzepatide. Since starting the medication I haven't managed a full 24-hour fast despite trying. I already have trouble getting enough calories so maybe it's for the best.

Fasting feels very natural on tirzepatide, though for me it's mainly the one-meal-a-day version. Before the medication I could already go from noon lunch to 1 pm the next day.

I finished a 35-hour fast. Woke up, took MOT-C, walked the dog for 1.5 hours, did a light 1.5-hour gym session with stretching, sat in the sauna for 19 minutes, then went to an icy river with friends for a few dips. Went to bed, did more MOT-C in the morning along with glycine, NAC, psyllium, and electrolytes, then jogged 5 km with the dogs. Feeling good and hoping to make this a monthly practice.

The day after my retatrutide shot is usually a good day for fasting. I don't do it every week but it's easy when I choose to. Typically a small early lunch then a 24-hour fast until the next day's early lunch. It's pretty straightforward on retatrutide and helps adjust weekly calories.

I just finished a 112-hour water fast for an upcoming procedure. First refeed was bone broth, then baked avocado sushi-style, then half of a 3x3 Flying Dutchman. I'll restart retatrutide at a low dose on Wednesday.

I read that fasting on GLP-1 meds might raise gallbladder problems. Does anyone know more about that?