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Weight does have an effect on pregnancy. There is actually a higher percentage chance of getting pregnant with twins then at normal weight. But being so severely overweight greatly increases pregnancy risks such as Diabetes and high blood pressure. Being so grossly overweight greatly reduces your chances of conceiving and as the answer above states it greatly increases pregnancy risks. A BMI of 19-25 gives the greatest chance of conceiving, being at the upper end of this range increases the chances of twins not having a BMI of 47 (if you are 5'7", higher if you are shorter, lower if you are taller but still grossly obese)

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18y ago

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