![Kissing Kissing](https://media.guestofaguest.com/t_article_content/wp-content/uploads/2015/03/11024360_459978414150443_1553832903_n.jpg)
A recent study reported in the journal Medical Hypotheses says kissing may increase a woman's immunity from Cytomegalovirus. Cytomegalovirus, contracted through mouth to mouth contact, can cause infant blindness and other birth defects if the mother is a carrier during pregnancy. Otherwise, the bug is relatively harmless in adults. Kissing has long been thought to be a way to pass along bugs and thus strengthen the body's defenses.
[Photo via @evevalentino]