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Nutrition | Low-Fat Dairy Products Linked to Infertility

Low-Fat Dairy Products Linked to Infertility

April 19, 2007—Women who eat more low-fat dairy products are at higher risk for infertility problems, according to researchers from Harvard University.

The US Department of Agriculture’s (USDA) 2005 Dietary Guidelines for Americans recommends that adults eat two to three servings of low-fat dairy products each day. A new study in Human Reproduction questions this advice.

As part of the Nurses’ Health Study II, 18,555 women of childbearing age shared information about their attempts to become pregnant and any fertility problems that they encountered. Over an eight-year period, the women completed questionnaires about their dietary habits, including how much and what types of dairy products they ate. Over the course of the study, 438 women were diagnosed with infertility due to an ovulation disorder (anovulatory infertility). “We found that intake of low-fat dairy foods was associated with a greater risk of anovulatory infertility, whereas intake of high-fat dairy foods was associated with a lower risk of this condition,” the authors commented.

Women who ate two or more servings per day of low-fat dairy products had almost two times the risk of infertility compared with women who consumed them once or less per week. High-fat dairy products had the opposite effect: women who had one or more servings per day of high-fat dairy products were 27% less likely to suffer from infertility than were women who ate these products once or less per week. Adding just one glass of whole milk per day cut the risk of infertility by more than one half. Low-fat yogurt and sherbet/frozen yogurt had the most negative impact on fertility; whole milk and ice cream were the most protective.

So what about the advice to eat less saturated fat from meat and dairy products? Perhaps the answer is to concentrate on eating a diet based on whole foods—those closest to their original source. Whole foods are only minimally processed, meaning that they have not been significantly altered to remove edible portions of the food, such as the bran from grains and fat from dairy products.

Emphasizing plenty of fresh fruits and vegetables, legumes, nuts, seeds, fish, and eating dairy products and lean meats in moderation provides a good balance of fats and other nutrients essential for maintaining good health and optimal fertility.

(Hum Reprod 2007;doi:10.1093/humrep/dem019)

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Kimberly Beauchamp, ND, earned her bachelor’s degree from the University of Rhode Island and her Doctorate of Naturopathic Medicine from Bastyr University in Kenmore, WA. She cofounded South County Naturopaths in Wakefield, RI. Dr. Beauchamp practices as a birth doula and lectures on topics including whole-foods nutrition, detoxification, and women’s health.

Copyright © 2007 Healthnotes, Inc. All rights reserved. Republication or redistribution of the Healthnotes® content is expressly prohibited without the prior written consent of Healthnotes, Inc. Healthnotes Newswire is for educational or informational purposes only, and is not intended to diagnose or provide treatment for any condition. If you have any concerns about your own health, you should always consult with a healthcare professional. Healthnotes, Inc. shall not be liable for any errors or delays in the content, or for any actions taken in reliance thereon. HEALTHNOTES and the Healthnotes logo are registered trademarks of Healthnotes, Inc.

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The health information contained in this site is not intended as medical advice and should not be considered a substitute for appropriate medical care. Any products mentioned in studies cited in Healthnotes articles are not necessarily endorsed by Bastyr. As with any product, consult with a natural health practitioner to discuss what may be best for you.


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