In twenty years, the best evidence will suggest that sperm counts are substantially declining across most of the world
One-OffHealth & Medicine16yManifold MarketsNo KYCVerified resolution dataFairly calibratedCurrent community forecastNo 60%
Forecasters
27
Question type
binary
Methodology
Play-money forecasting platform
Source type
Forecast
Market data
Updated 1 hour ago
LaggingJan 28, 23, 2:49 AM UTCJan 28, 43, 5:59 AM UTC
Trends
Related Markets
Related questions for context, not a comparison of equivalent contracts.
In twenty years, will the best evidence available suggest that sperm counts have been substantially declining across most of the world?
Manifold MarketsIn twenty years, will the best evidence show very substantial (>one quarter) declines in fertility rate (relative to couples trying equally hard to conceive in the past) due to decreasing sperm count, in at least one country?
Manifold MarketsWill there be any genetic modification which substantially reduces suffering in vertebrates by end of 2026?
Manifold MarketsEbola pandemic in 2026?
PolymarketHantavirus pandemic in 2026?
PolymarketFDA approves skin cancer vaccine by which date?
PolymarketRules
Resolution criteria are not yet available for this market. Refresh cycles will populate this section when source rules are stored.
Open markets
Health & MedicinePOLYMARKETHantavirus pandemic in 2026?
- No-0.1pt97%
- Yes+0.1pt3%
- Total Vol
- $18.1M
- 24h Vol
- $23.2K
KALSHIWill WHO declare Hantavirus a Public Health Emergency of International Concern this Year?
- No97%
- Yes-0.9pt3%
- Total Vol
- $1.9M
- 24h Vol
- $6K
POLYMARKETFDA approves skin cancer vaccine by which date?
- December 31,+4.0pt65%
- September41%
- June28%
- Total Vol
- $97.1K
KALSHIMeasles cases in 2026?
- Above 300099%
- Above 4000-1.0pt96%
- Above 6000-4.0pt58%
+2 more outcomes
- Total Vol
- $1M
- 24h Vol
POLYMARKETNew pandemic in 2026?
- No+0.5pt94%
- Yes-0.5pt6%
- Total Vol
- $1.1M
- 24h Vol
- $1.8K
KALSHIWhen will the FDA approve Intellia Therapeutics' lonvo-z?
- Before July 2027+67.0pt97%
- Before 202872%
- Before October 202752%
- Total Vol
- $4.9K
- 24h Vol
- Will 3 mg THC beverages be federally legal to sell?
- Measles cases in U.S. in 2026?
- Cyclosporiasis cases reported in the US in 2026?
- FDA decision: Bepirovirsen by GlaxoSmithKline (in 2026)
- What will the average number of measles cases be during Trump's term?
- When will the FDA reclassify BPC-157 to Category 1?
- Ebola pandemic in 2026?
- FDA decision: Saroglitazar by Zydus Therapeutics (in 2026)
- When will Compass Pathways submit a NDA for COMP360 psilocybin?
- FDA decision: Ifinatamab Deruxtecan by Daiichi Sankyo (in 2026)
- Will the FDA approve CagriSema?
Frequently asked questions
- What are the current odds for In twenty years, the best evidence will suggest that sperm counts are substantially declining across most of the world?
- Manifold Markets prices No at 60% as of September 9, 2026.
- When does In twenty years, the best evidence will suggest that sperm counts are substantially declining across most of the world resolve?
- In twenty years, the best evidence will suggest that sperm counts are substantially declining across most of the world is scheduled to resolve on January 28, 2043.