- According to the largest meta-analysis of its kind, sperm counts around the world declined by more than 50 percent, to 47 million sperm per mL, between 1973 and 2013, and continue to dwindle
- The most significant declines were found in samples from men in North America, Europe, Australia and New Zealand, where many had sperm concentrations below 40 million/mL — a level at which a man will have trouble fertilizing an egg
- Endocrine disrupting chemicals have undoubtedly contributed to the dramatic decline in reproductive health among men. Excessive microwave radiation from wireless technologies, obesity and inactivity also play a significant role
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