A recent study published in Obstetrics and Gynecology (June 2011) looked at the IVF outcomes of over 1700 women from 2007 to 2010 in an effort to see if women with high BMI’s (Body Mass Index) had a reduced chance of conception.
I like this study as the sample size is quite large and certain variables were accounted for (including age at cycle start, infertility diagnosis, type of stimulation, total gonadotropin dose, use of intracytoplasmic sperm injection, and number of embryos transferred) which increases the validity and legitimacy of this study.
The study goes on to conclude that women with a BMI of 35 or higher (to have a BMI of 35, one would have to weigh 225lbs and be 5’7” tall) had fewer fertilized oocytes and lower estradiol levels. What is more striking is that women with BMI’s over 40 had 50% less clinical pregnancies compared with women with normal BMI’s. Normal BMI levels are thought to be between 18 and 25.
“Obesity was associated with fewer normally fertilized oocytes, lower estradiol levels, and lower pregnancy and live birth rates.” – Journal of Obstetrics and Gynecology June 2011
Although many of the negative issues occurred in those who had a BMI of 35 and above, I suggest that everyone should work towards a healthier BMI which is typically below 30 and ideally under 25. I think that we can all agree that the healthier we are, the better our chances are at conception.
To view the full abstract, click here
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