A short, curated guide — not an automatic related dump. Figures come from SubMouse's safe-for-work directory when we have them.
r/keto (about 4.0M members, directory rank #241) is for ketogenic, low-carbohydrate eating. Sustainable weight loss by any method and nutrition-science discussion each belong in different rooms.
See also keto vs loseit on SubMouse.
Stay on keto for ketogenic diet experience and questions. Use loseit for weight loss by any sustainable method, and nutrition for nutrition science rather than one diet protocol.
r/keto — Keto: The Home for Ketogenic Diets
The Ketogenic Diet is a low carbohydrate method of eating. /r/keto is place to share thoughts, ideas, benefits, and experiences around eating within a Ketogenic lifestyle. Helping people with diabetes, epilepsy, autoimmune disorders, acid reflux, inflammation, hormonal imbalance…
loseit - Lose the Fat
When to choose it: Weight loss through any healthy, sustainable method.
Why it is here: Paired on keto vs loseit. Public description: people of all sizes discussing healthy sustainable weight loss (about 4.2M members, rank #223).
How it differs from r/keto: Method-agnostic weight loss versus keto protocol.
Nutrition
When to choose it: Nutrition science — macros, micros, vitamins and diet research.
Why it is here: Shared Nutrition topic neighbourhood. Public description: discussion of nutrition science (about 5.9M members, rank #137).
How it differs from r/keto: Science discussion versus keto lifestyle community.
Run the automatic finder for r/keto (results are matched from our directory; that page is not indexed): Find related to r/keto.
Members and public descriptions come from SubMouse's safe-for-work directory (as of 2026-11-02 UTC); 7-day growth measured from 2026-10-26. Posts/day and culture claims appear only when we have them — missing fields stay n/a. Directory rank is listing order. Communities outside the published Top 100 open in the info tool instead of a full community page. Guide updated 2026-11-07.