“men who are overweight tend to have reduced sperm concentration, lower total sperm count, and fewer motile sperm. … The fact that the sperm count decline is al

“men who are overweight tend to have reduced sperm concentration, lower total sperm count, and fewer motile sperm. … The fact that the sperm count decline is also occurring in countries in South and Central America, Africa, and Asia, according to the new meta-analysis, suggests that the lifestyle factors and environmental exposures that are likely to blame are present globally“ While the article does not rule out chemical contributions, this strongly suggests a lifestyle effect since these regions have been moving out of the poverty trap for over 30 years. Perhaps that is also what makes the sperm decline seem to accelerate. So behind yet another environmental scare might actually be good news: Wealth also comes with a higher rate of obesity and the tendency to do office work where a male would be sitting on a chair all day (increasing the temperature the scrotum is exposed to).