r/HumanMicrobiome is a subreddit with 46k members. The most common kinds of discussions are advice requests and pain & anger, and the community frequently discusses microbiome, gut, antibiotics, probiotics, and gut health.
This sub is a haven from the flood of misinformation that is widespread on Reddit and over much of the internet. We have an evidence-based focus on the complex ecosystem in our guts that regulates the entire body.
Popular Themes in r/HumanMicrobiome
#1
Advice Requests
: "Oral microbiome - How to reduce Streptococcus overgrowth? (Test results)"
25 posts
#2
Pain & Anger
: "Damage from antibiotics"
10 posts
#3
Solution Requests
: "Severe constipation for an entire month, no change in diet, magnesium and « usual » probiotics dont work like they used to all my Life - i eat prunes and fiber. PLEASE PLEASE HELP with suggestions"
6 posts
#4
News
: "New and updated threads in the last week on the Human Microbiome Community Forum"
6 posts
#5
Ideas
: "Try Symbiose, it is a kind of “self-care Tamagotchi” where you look after a tiny bacterium (your overall bug) that reacts and grow to your habits: food, sleep, stress, hydration, even stool type."
1 post
Popular Topics in r/HumanMicrobiome
#1
Microbiome
: "No one told me how vital plant variety is for your health / Microbiome – my life has changed!"
90 posts
#2
Gut
: "Looking for suggestions to fix Gut heath, starting to feel very discouraged."
55 posts
#3
Antibiotics
: "Positive Update on my GI System after taking Antibiotics 10 months Ago"
28 posts
#4
Probiotics
: "Probiotics for mood"
28 posts
#5
Gut Health
: "Gut biome wiped out after colonoscopy prep"
25 posts
#6
Probiotic
: "Severe dysbiosis following fluoroquinolone treatment + relapse of MCAS: Probiotic protocol and follow-up research"
17 posts
#7
Fmt
: "Stay away from Gezone Darmflora when it comes to Fmt"
14 posts
#8
Health
: "What are the best prebiotics and probiotics for women’s Health? I’ve seen so many options out there — I’d love to know what’s actually effective and worth trying. Any suggestions for women over 40?"
13 posts
#9
Sibo
: "Digestive enzymes: can I take them without knowing the exact condition (IBS, Sibo, Candida or leaky gut)?"
12 posts
#10
Ibs
: "Digestive enzymes: can I take them without knowing the exact condition (Ibs, SIBO, Candida or leaky gut)?"
8 posts
Member Growth in r/HumanMicrobiome
Yearly
+4k members(10.1%)
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About
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Last updated: August 8, 2026