A new study suggests that body fat percentage may be a more meaningful indicator of male fertility than body mass index (BMI) alone. The Correlation of Higher Body Fat Percentage to Lower Sperm CountsThe study examined the relationship between body fat percentage and semen quality in men, comparing the findings with traditional BMI measurements. These findings suggest that body fat percentage may provide additional insight into male reproductive health beyond weight alone. The researchers reported an association between increased body fat and reduced sperm count but did not conclude that excess body fat directly causes infertility. Because BMI cannot distinguish between muscle and fat, men with a "normal" BMI may still have elevated body fat levels that could influence their reproductive health.