Maternal obesity compromises babies' immune system at time of birth

My mom (who is 5'7") gained 60 lbs while pregnant with my brother. She was totally normal weight and slim before she got pregnant, but went crazy and ate everything. She lost 20 of the 60 lbs before getting pregnant with me, only 8 months later. While she was pregnant with me she gained another 60 lbs on top of the 40 she hadn't lost from the last pregnancy - 100 lbs in 17 months.

Needless to say my brother and I were both HUGE babies (10lb 8oz and 11lb 6oz) and neither of us ever naturally slimmed out. My 31 year old brother has had all kinds of health problems his whole life, and even though he's slim now due to weird dieting he does every few months, he has insanely high blood pressure, cholesterol, etc.Our mom having preeclampsia while she was pregnant with him (due to the sudden weight gain I'd imagine, I don't know how someone manages to gain 60 lbs in 40 weeks) is the likely culprit.

She didn't start losing weight until I was like 17 years old. Now she has exercise bulimia (she eats nothing but junk food but then works out for 2-5 hours throughout the next day (she's a personal trainer for middle-aged women and Zumba instructor, which is how she justifies exercising like a crazy person, and she has a personal trainer she goes to)).

I gained 11 lbs during my pregnancy, and I am not an in general fit and active person, because I had gestational diabetes and strictly stuck to my diet. After I gave birth and had de-swollen and my uterus and fluids went back to normal about a month later, I was actually down 17 lbs from my starting weight.

Pregnancy is so weird and complicated. I swear, the doctors are just guessing 90% of the time.

/r/science Thread Parent Link - mdnewsdaily.com