Here are two studies that researched male alcohol intake and correlations to spontaneous abortion
Caffeine, Alcohol, and Psychological Stress and In Vitro Fetilization
Publication Date: 02 Sep 2009. Reproductive Biology Insights
Author: Hillary Klonoff-Cohen. Department of Family and Preventive Medicine, University of California, San Diego, 9500 Gilman Drive MC 0607, La Jolla, CA 92093-0607.