Community guides · Science
How to comment in r/biology without getting downvoted
r/biology is one of Reddit's most rigorous communities. Replies are held to standards uncomfortably close to peer review — sources, mechanism, and 'we don't know yet' are the price of entry.
What's hot in r/biology now
What people are actually discussing
Top threads from the last month — what's getting engagement right now.
What this sub rewards
How replies earn upvotes here
- Stay within peer-reviewed science; clearly mark anything speculative. If it's not in a peer-reviewed paper or major preprint, mark it as preliminary. Don't blur established vs emerging.
- Back specific claims with evidence — research, data, or named sources. Link the abstract or DOI. r/science readers will check.
- Acknowledge limitations, trade-offs, or uncertainty when relevant. Mention sample size, confounders, replication status. 'One study showed' is a setup, not a conclusion.
What good looks like
Real comments that landed in r/biology
Two recent highly-upvoted replies. Notice what they have in common — concrete, no preamble, no self-promotion.
"This had me like Wait, a crab is an insect!?!"
"Bee's are incredible friends of the Earth! Go bees!"
Your pre-reply checklist
Before you hit Reply — four quick checks
Does my comment add something specific, not just an opinion?
A useful reply names a number, a method, a personal experience, or a concrete example. If you could replace your draft with "I agree" and lose nothing, rewrite.
Have I read the top 3 comments already on this thread?
If the highest-upvoted reply already says what you were about to say, your comment will sink. Add what's missing — counterexamples, edge cases, the next step — not what's there.
Would my reply still work if my username was removed?
If it only makes sense because it promotes you, your product, or your platform, this sub will spot it. Frame the value as "this solved it for me," not "check out my…"
Did I skim the sidebar rules one more time?
Every sub has at least one rule that surprises outsiders — peer-review only, no images, no specific tags, no off-topic. Five seconds in the sidebar can save you a removal.
Want to draft this reply with the rules already baked in?
Try Redimates — free, 10 replies / week