ANTIBIOTICS IN PREGNANCY. “Low birth weight (LBW) has been associated with common adult-onset chronic diseases, including obesity, cardiovascular disease, type II diabetes and some cancers. The etiology of LBW is multi-factorial. However, recent evidence suggests exposure to antibiotics may also increase the risk of LBW.”
http://www.nature.com/ijo/journal/v37/n7/full/ijo201347a.html