A new study published in the journal Human Reproduction has found that if men consume lots of unhealthy saturated fats, it lowered their sperm count. Massachusetts General Hospital, Brigham and Women�s Hospital and the Harvard School of Public Health teamed together to look at how different types of fats affected sperm concentration and quality. 99 men provided semen samples and detailed information on their diet. The majority of the men (71%) were overweight or obese but more than half (67%) didn�t smoke. The researchers found that the men who consumed more saturated fats had less sperm, whereas those who consumed higher amounts of good fats, such as omega 3, had sperm of better quality and morphology (shape).