Does my weight affect my fertility?

With New Year’s resolutions still going strong, your weight in relation to your fertility may be on your mind. Research shows that a body mass index (BMI) between 20-25 is ideal to conceive, and losing or gaining weight to fall into that range can significantly improve your fertility outcomes. Most research uses the BMI as a function of weight and height – if you’d like to figure out yours, here’s an easy calculator to do so. Since BMI is not a perfect measure (e.g., it doesn’t distinguish between fat and muscle), we recommend you also discuss your weight with your doctor. Here’s the more detailed high-quality research on weight and fertility:

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Can my diet improve fertility outcomes?

Relatively clear answers and quality research can be hard to come by in fertility research. However, when it comes to how food relates to fertility outcomes, there are some decent data! The short answer is: Avoid fast food, and instead embrace fruits, vegetables, legumes, fish, whole grains, and foods high in omega 3, such as nuts. This goes not just for women undergoing fertility treatment, but also those hoping to conceive naturally. This “Mediterranean diet” has also been linked to higher sperm count and sperm quality in men. And yes, the literature actually refers to it as a “Mediterranean diet” – we swear we didn’t make it up because Ovally‘s partner clinics are in Spain :)!

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