Unverified50% confidenceFactExact time
Even in Scandinavian countries such as Norway and Denmark, which have strong social safety nets, birth rates are also declining.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
9/19/2026
First Seen
Valid until: 12/18/2026
Sources
Related Entities
Related Claims
Unverified日本2023年总和生育率降至1.2063% similarUnverifiedFemale fertility accelerates its decline after the age of 35.63% similarUnverified欧洲、北美的多项纵向研究观察到男性睾酮下降及青少年精子数量下降趋势62% similarUnverified较晚出生世代男性睾酮水平偏低的现象被称为世代效应(generational decline)56% similarUnverifiedOver the past fifty years, sperm counts among men in Western countries have declined by more than 50%, a trend researchers have termed the 'sperm crisis.'56% similar
Cite This Claim
Stable URI
https://kongchang.com/claim/933713API
curl https://kongchang.com/api/v1/knowledge/claims/933713MCP
get_claim(id=933713)