Hey, Never thought about the en Utero thing! I just know in the sixties fat babies were considered healthy babies. Breast feeding was not encouraged as much. I only was breast feed for several weeks due to my mother getting mastitis.She feed me cereal(baby goop) at four weeks. I know the digestive tracts are not fully developed for this. When I had my daughter seven years ago, she was trying to push the cereal thing on her. My daughter could only tolerate soy formula. I couldn't breast feed. My daughter seems to have a normal BM without all the fuss. Any other baby boomers have the early feeding situation? Maybe doesn't matter though since there are younger ibs sufferers.