Topic

Statistics & Trends

Every Oakman post tagged statistics & trends, collected in one place.

Is male fertility declining globally?
Male FertilitySperm Health
Yes, male fertility is declining globally. Sperm concentration fell by 52% between 1973 and 2011, and a follow-up study published in 2022 confirmed the decline is still accelerating, with counts dropping at roughly 2.6% per year since 2000.Short answer: Yes, the data is clear — sperm counts have dropped by more than 50% over the last 50 years, and the decline is accelerating. But understanding why gives you something you can actually do about it.What the numbers actually showIn 2017, a team of researchers led by Dr. Hagai Levine pooled... Read more...
How Age Affects Male Fertility (It's Not Just a Women's Issue)
Male FertilitySperm Health
Age does affect male fertility, though the decline is slower and more gradual than it is for women. Sperm DNA fragmentation rises, motility drops, and the odds of conception fall after 40, with the effects becoming more noticeable after 45.Let's get one thing straight: when people talk about fertility and age, they almost always mean women. The clock. The decline. The pressure. Men get a pass in that conversation, and that's a mistake.If you're a man over 35 and thinking about having kids—or just curious about what's happening inside your... Read more...