yes they do, which is wh ywe have the cesarian section
the actual reasons for an increased amount of premature, or misscariaged babies in skinny[i.e small hips] women is [as my mother explained it] something to do with some sort of medical jargon the gist of which i picked up was hormonal
apparently women 40+ have an incredibly high rate of
a) infertility
b) misscariage
but most importantly they have a much higher chance of having a fucked up baby, downes sydnrome being the highest
obese women[dont forget he is talking about women with BMI over 35] are also physically at risk if they manage to fall pregnant, both during the pregnancy and the delivery
ever seen a baby die during delivery? well it happens alot more with fat mothers
be aware though this is all second hand knowledge and if i am wrong in anyway its not my mums fault, its mine cause i dont fully understand all of what she says