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 builders
Skip the search for a problem worth your time. Browse a vetted, growing list and start where the gap is real.
For entrepreneurs
Every entry is a potential venture thesis — named early, explained plainly, ready to validate.
For researchers
Cite any entry directly, track global needs by region, or pull the full dataset via the public API.
1355 total logged
1355 still open
0 marked solved
7 registered profiles
We haven't solved why some people experience severe reactions to vaccines while most don't.
open
Global / Unspecified, Global
Vaccines are safe and effective for the vast majority of people, but a small number experience severe reactions for reasons not yet fully understood. Better prediction of who's at risk could make vaccination even safer.
Citation ID: WS00546
Title: We haven't solved why some people experience severe reactions to vaccines while most don't.
URL: https://www.worldsolve.org/index.php?api=problem&id=546
We can't yet fully cure chronic sinus infections that don't respond to standard antibiotics or surgery.
open
Global / Unspecified, Global
Some patients with chronic sinusitis continue experiencing symptoms even after surgical intervention, suggesting current treatments don't address every underlying cause. A more complete understanding and treatment approach remains needed.
Citation ID: WS00545
Title: We can't yet fully cure chronic sinus infections that don't respond to standard antibiotics or surgery.
URL: https://www.worldsolve.org/index.php?api=problem&id=545
We don't have a widely accessible way to detect and treat postpartum thyroid dysfunction early.
open
Global / Unspecified, Global
Thyroid problems after childbirth can cause fatigue, mood changes, and other symptoms that are sometimes mistaken for normal postpartum adjustment, delaying diagnosis. Routine, accessible screening remains inconsistently practiced.
Citation ID: WS00544
Title: We don't have a widely accessible way to detect and treat postpartum thyroid dysfunction early.
URL: https://www.worldsolve.org/index.php?api=problem&id=544
We haven't found a reliable way to prevent hospital readmissions for chronic disease patients after discharge.
open
Global / Unspecified, Global
Many patients with chronic conditions end up back in the hospital shortly after being discharged, often due to gaps in follow-up care rather than a failure of the original treatment. Better post-discharge support remains an unresolved healthcare system issue.
Citation ID: WS00543
Title: We haven't found a reliable way to prevent hospital readmissions for chronic disease patients after discharge.
URL: https://www.worldsolve.org/index.php?api=problem&id=543
We can't yet fully explain why certain populations are more genetically susceptible to specific diseases.
open
Global / Unspecified, Global
Some diseases occur far more frequently within certain populations due to genetic factors that aren't yet fully mapped or understood. Filling this knowledge gap could lead to more targeted prevention and treatment.
Citation ID: WS00542
Title: We can't yet fully explain why certain populations are more genetically susceptible to specific diseases.
URL: https://www.worldsolve.org/index.php?api=problem&id=542
We don't have an effective way to prevent the recurrence of blood clots in patients prone to them.
open
Global / Unspecified, Global
Patients who've had one dangerous blood clot are at ongoing risk of another, and current prevention relies mainly on long-term blood thinners that carry their own risks. A more targeted, lower-risk prevention method remains needed.
Citation ID: WS00541
Title: We don't have an effective way to prevent the recurrence of blood clots in patients prone to them.
URL: https://www.worldsolve.org/index.php?api=problem&id=541
We haven't solved how to treat chronic pain in cancer survivors after treatment has ended.
open
Global / Unspecified, Global
Many cancer survivors continue to experience pain long after their cancer treatment concludes, and this pain is often undertreated because it's assumed to have resolved along with the disease. Better long-term pain management for survivors remains an overlooked need.
Citation ID: WS00540
Title: We haven't solved how to treat chronic pain in cancer survivors after treatment has ended.
URL: https://www.worldsolve.org/index.php?api=problem&id=540
We can't yet fully prevent the long-term effects of childhood trauma on adult physical health.
open
Global / Unspecified, Global
Research shows a strong link between childhood trauma and adult physical illness, but effective, scalable prevention and early intervention remain limited. Closing this gap could improve both mental and physical health outcomes across entire populations.
Citation ID: WS00539
Title: We can't yet fully prevent the long-term effects of childhood trauma on adult physical health.
URL: https://www.worldsolve.org/index.php?api=problem&id=539
We don't have a scalable solution to detect and treat rare genetic diseases affordably in most of the world.
open
Global / Unspecified, Global
Diagnosing rare genetic conditions often requires expensive genetic testing that remains inaccessible in much of the world, delaying or entirely preventing diagnosis. Making this technology affordable and widely available remains unresolved.
Citation ID: WS00538
Title: We don't have a scalable solution to detect and treat rare genetic diseases affordably in most of the world.
URL: https://www.worldsolve.org/index.php?api=problem&id=538
We haven't found an effective way to prevent the muscle wasting caused by long hospital stays.
open
Global / Unspecified, Global
Extended time in a hospital bed, especially in intensive care, can cause significant muscle loss that affects recovery and long-term function. Better prevention methods during hospitalization remain underdeveloped.
Citation ID: WS00537
Title: We haven't found an effective way to prevent the muscle wasting caused by long hospital stays.
URL: https://www.worldsolve.org/index.php?api=problem&id=537
We can't yet fully explain the biological causes of most cases of unexplained infertility.
open
Global / Unspecified, Global
A meaningful share of infertility cases have no identifiable cause even after thorough testing, leaving both patients and doctors without clear answers or targeted treatment. Understanding these cases better remains an open research priority.
Citation ID: WS00536
Title: We can't yet fully explain the biological causes of most cases of unexplained infertility.
URL: https://www.worldsolve.org/index.php?api=problem&id=536
We don't have a widely available, effective treatment for chronic hives that don't respond to standard medication.
open
Global / Unspecified, Global
A subset of patients with chronic hives don't respond well to typical antihistamine treatment, leaving them with persistent, disruptive symptoms and few further options. More effective alternatives remain limited.
Citation ID: WS00535
Title: We don't have a widely available, effective treatment for chronic hives that don't respond to standard medication.
URL: https://www.worldsolve.org/index.php?api=problem&id=535
We haven't solved why some children develop severe allergic asthma while others with similar exposure don't.
open
Global / Unspecified, Global
Childhood asthma rates have risen substantially, but why some children develop severe, persistent symptoms while others exposed to similar triggers don't remains only partly understood. A clearer answer could improve both prevention and treatment.
Citation ID: WS00534
Title: We haven't solved why some children develop severe allergic asthma while others with similar exposure don't.
URL: https://www.worldsolve.org/index.php?api=problem&id=534
We can't yet fully treat chronic Lyme disease symptoms that persist after standard antibiotic treatment.
open
Global / Unspecified, Global
Some patients continue experiencing symptoms long after completing standard treatment for Lyme disease, and doctors disagree on both the cause and the best way to treat this lingering illness. Resolving this uncertainty remains a significant unmet need.
Citation ID: WS00533
Title: We can't yet fully treat chronic Lyme disease symptoms that persist after standard antibiotic treatment.
URL: https://www.worldsolve.org/index.php?api=problem&id=533
We don't have an effective way to prevent the recurrence of depression after a first episode.
open
Global / Unspecified, Global
Many people who experience one episode of depression go on to experience another, and current treatments don't reliably prevent this recurrence. Better long-term prevention strategies remain an important gap in mental health care.
Citation ID: WS00532
Title: We don't have an effective way to prevent the recurrence of depression after a first episode.
URL: https://www.worldsolve.org/index.php?api=problem&id=532
We haven't found a reliable way to detect early-stage stomach cancer before it becomes advanced.
open
Global / Unspecified, Global
Stomach cancer often causes no clear symptoms until it has progressed significantly, particularly in regions without routine screening programs. Earlier, more accessible detection could substantially improve survival outcomes.
Citation ID: WS00531
Title: We haven't found a reliable way to detect early-stage stomach cancer before it becomes advanced.
URL: https://www.worldsolve.org/index.php?api=problem&id=531
We can't yet fully prevent the birth defects caused by certain infections during pregnancy.
open
Global / Unspecified, Global
Infections like Zika or cytomegalovirus can cause serious birth defects if contracted during pregnancy, and prevention options remain limited in many regions. Better vaccines or protective treatments remain needed to close this gap.
Citation ID: WS00530
Title: We can't yet fully prevent the birth defects caused by certain infections during pregnancy.
URL: https://www.worldsolve.org/index.php?api=problem&id=530
We don't have an effective way to reverse the cartilage loss that causes osteoarthritis.
open
Global / Unspecified, Global
Osteoarthritis treatment currently focuses on managing pain and preserving remaining function rather than restoring lost cartilage. A regenerative treatment could transform care for one of the most common causes of chronic pain in older adults.
Citation ID: WS00529
Title: We don't have an effective way to reverse the cartilage loss that causes osteoarthritis.
URL: https://www.worldsolve.org/index.php?api=problem&id=529
We haven't solved how to make organ transplants available to more patients without relying solely on donor scarcity.
open
Global / Unspecified, Global
Thousands of patients remain on transplant waiting lists that never resolve in time, largely because donor organ supply can't keep pace with demand. Alternatives like lab-grown organs remain the most promising but still unrealized solution.
Citation ID: WS00528
Title: We haven't solved how to make organ transplants available to more patients without relying solely on donor scarcity.
URL: https://www.worldsolve.org/index.php?api=problem&id=528
We can't yet fully explain why chronic fatigue sometimes follows viral infections long after the virus is gone.
open
Global / Unspecified, Global
Post-viral fatigue syndromes, including long COVID, leave some patients exhausted for months or years after the initial infection has cleared, and the biological mechanism remains unclear. Understanding this could unlock treatment for a currently poorly understood condition.
Citation ID: WS00527
Title: We can't yet fully explain why chronic fatigue sometimes follows viral infections long after the virus is gone.
URL: https://www.worldsolve.org/index.php?api=problem&id=527