World Solve — A living repository of problems worth solving.

What World Solve is

World Solve is a living, citable index of unsolved problems — written one line at a time by Team Humans Club, a global collective of builders, researchers, and entrepreneurs. We do not solve the problems here. We Democratize Innovation.

For buildersSkip the search for a problem worth your time. Browse a vetted, growing list and start where the gap is real.

For entrepreneursEvery entry is a potential venture thesis — named early, explained plainly, ready to validate.

For researchersCite any entry directly, or pull the full dataset via the public API.

1355total logged

1355still open

0marked solved

3registered Humans

We can't fully explain why obesity is so hard to treat long-term for most people.

open Health & Biology

Diet and exercise advice hasn't solved the obesity epidemic, and the biological reasons weight loss is so hard to sustain remain only partly understood. A deeper understanding could lead to treatments that actually last.

WS00069 · cite this · logged 18 Jul 2026 · by Human 000 (Administrator)

Team Humans Club. (2026). Problem WS00069: We can't fully explain why obesity is so hard to treat long-term for most people.. World Solve. Retrieved 20 Jul 2026, from https://worldsolve.org/index.php?id=69

Public API

Pull the dataset programmatically:

?api=problems
?api=problem&id=1
?api=categories
?api=stats

How to cite

Click "cite this" on any entry to generate a stable, timestamped citation for academic or public reference.