A new study by Carl J. Charnetski, professor of psychology, and Francis X. Brennan, Jr., assistant professor of psychology, at Wilkes University, suggests that the immune system is boosted by frequent sexual activity. Their research, "The Effect of Sexual Behavior on Immune System Function," is being presented at the Eastern Psychological Association Convention in April. "We found that individuals engaging in sexual activity once or twice a week have substantially higher levels of the antibody Immunoglobulin A (IgA) than individuals reporting no sexual activity or less than one occurrence a week," says Charnetski. The bad news for people hoping to...