A large meta-analysis, studying five decades, has found a dramatic and sustained decline in testosterone levels among men, raising concerns that the male fertility crisis is deeply misunderstood.
A new Israeli study has found that average testosterone levels in men have fallen by 54% in less than five decades.
The findings, presented at the annual meeting of the European Society of Human Rep… [+6130 chars]
The findings, presented at the annual meeting of the European Society of Human Rep… [+6130 chars]