> Obesity and bad diets can impact sperm count. But the US, a world center of obesity, seems to be doing better than many less obese countries, and countries like China and France that have maintained relatively low rates of obesity and overweight seem heavily affected. If modern diets are the problem, then it has to be something more insidious than obvious you-are-very-fat obesity - unless you want to use the “all regional comparisons are too low sample size for us to care” card.
> Obesity and bad diets can impact sperm count. But the US, a world center of obesity, seems to be doing better than many less obese countries, and countries like China and France that have maintained relatively low rates of obesity and overweight seem heavily affected. If modern diets are the problem, then it has to be something more insidious than obvious you-are-very-fat obesity - unless you want to use the “all regional comparisons are too low sample size for us to care” card.