Researchers followed 1,700 students from Penn State for four years.
Alcohol affects fertility by reducing the number of sperm - and altering their size, shape and motility.
She spends her evenings taking partiers on "the best night out of their lives."
After three months, participants in a study reduced their alcohol consumption.
A team of scientists analyzed data from 22,117 people aged 18 to 89.
Stout-loving Patrick the mini-horseregularly stands calmly at the bar of the Drum Inn.
Their study throws into question the validity of previous research, which has been used to defend drinking small to moderate amounts with meals.
Over half of Americans agreed that their entire family drinks “too much” at holiday gatherings.