How the weight loss communities compare
Membership is concentrated: the three largest communities hold 93% of all members on this list, so most of the weight loss conversation happens in a handful of places. r/loseit is both the biggest and the busiest, with about 67 new posts a day. Per member, the liveliest is r/WegovyWeightLoss: 23 posts a day from 84.2K members — a smaller crowd, but an engaged one. The oldest is r/loseit, founded in 2010; 2 of the 9 were started in the last five years, a sign the topic keeps splitting into new niches.
The 9 biggest weight loss subreddits
r/loseit 4,216,782 members · ~67 posts/day · +2.2K since Oct 19 · since 2010A place for people of all sizes to discuss healthy and sustainable methods of weight loss. Whether you need to lose 2 lbs or 400 lbs, you are welcome here!
- Wr/WeightLossAdvice 472,054 members · ~47 posts/day · since 2014
For healthy living.
- Wr/weightwatchers ↗ 113,212 members · ~2.3 posts/day · since 2010
A community for news, support, and helpful links regarding the #1 doctor-recommended weight-loss program, Weight Watchers.
- Wr/Weightlosstechniques ↗ 107,516 members · ~5.7 posts/day · since 2013
Weight loss has become an incredible part of our life and hence to know about the tips and tricks in it becomes significant. This subreddit is dedicated to those who are looking for weight loss tips, quick weight loss techniques …
- Wr/WegovyWeightLoss ↗ 84,184 members · ~23 posts/day · since 2022
This is an unofficial community for people who use or are interested in Wegovy, or other GLP-1 RA medications, for weightloss. Wegovy is a once-weekly injection of semaglutide, which is a medication that mimics glucagon-like-pept…
- Wr/WeightLossFoods ↗ 62,003 members · ~0.6 posts/day · since 2012
A community to discuss and share weight loss foods. Please read the rules to ensure your post is not taken down/you are not banned.
- Wr/weightlossdiets ↗ 45,402 members · ~7.4 posts/day · since 2018
Weight loss and Fitness Consultant promoting Holistic Health, Diet and Exercise. I love helping people feel better with Weight Training and Body Shaping
- Pr/PCOSloseit ↗ 44,269 members · ~10 posts/day · since 2014
We are a community of PCOS sufferers trying to lose weight for a variety of reasons, whether it be easing symptoms, trying to conceive, or reasons not related to PCOS. If you would like to join, please message the mods with a lit…
- Or/OzempicForWeightLoss ↗ 32,975 members · ~3.1 posts/day · since 2022
Welcome to a supportive community for anyone using Ozempic and Semaglutide for weight loss. Share experiences, ask questions, and find tips on managing side effects, appetite suppression and learning how GLP-1 helps with treating…
Choosing where to post
If you have a question, start in r/WeightLossAdvice: it is set up for exactly that, and with about 47 new posts a day there are plenty of people around to answer. Rule sets vary: of the communities we have rules for, r/loseit lists 13, against 5 in r/WeightLossAdvice, so a post that is fine in one can be removed in another.
Before posting, sort a subreddit by “Top” for the past month: it shows in a minute what that community rewards. Always read the rules in the sidebar first — each community is run by its own volunteer moderators. Our guide to searching Reddit explains how to dig through any of these communities, and the subreddit info tool gives you the stats of one we don't list.
Frequently asked questions
Which weight loss subreddit has the most members?
r/loseit is the largest, with 4,216,782 members, followed by r/WeightLossAdvice (472.1K) and r/weightwatchers (113.2K).
Where are the most new weight loss posts?
By new posts per day, r/loseit leads with about 67, ahead of r/WeightLossAdvice (47). Counts are averages over the last seven days.
Which weight loss subreddit is best for questions?
r/WeightLossAdvice is the one built around questions and advice, with about 47 new posts a day. Check its rules and search it first — common questions have usually been answered.
How many weight loss communities are on this list?
We list 9 active, safe-for-work weight loss communities with at least 25,000 members each, 5.2M members in total (people can be in several). Reddit has many smaller ones too; our guide on searching Reddit shows how to find them.
What is the oldest weight loss subreddit?
r/weightwatchers, created on Feb 8, 2010.
Are these weight loss subreddits safe for work?
Yes. Every community on this page is public and not marked 18+ by Reddit, and we filter out communities whose name or description points to adult content.
Data: Reddit's public subreddit search and the Arctic Shift archive (Oct 30, 2026), growth from SubMouse's weekly snapshots. Member counts of communities outside our Top 1000 come from the archive and can lag a little. Not affiliated with Reddit.