Men whose mothers were exposed to stressful life events while they were in the first 18 weeks of pregnancy may have reduced sperm counts when they become adults, according to a new study. Men whose ...

For generations, society has equated size with strength, health, and desirability. The belief that “bigger is better” ...

When you see or hear a reference to “the 1 percent,” most people think of socioeconomic status—the people with the top 1 percent of wealth or income in the United States, which is how the term is ...

In the last 50 years, average human sperm concentrations dropped by 51.6 percent, and total sperm counts dropped by 62.3 percent, according to a study published last week in the journal Human ...

The discovery raises significant concerns for human reproductive health. Researchers issue warning about overlooked threat to male reproductive system: 'Underlying toxicity mechanisms' first appeared ...