In a study published in the journal Human Reproduction, researchers found that eating low fat dairy food every day may lead to a higher risk of infertility. The study found no difference between women who ate the most dairy food and those who ate little or none.
Scientists, led by Dr Jorge Chavarro from Harvard School of Public Health and Brigham and Women’s Hospital and Harvard Medical School, Boston followed 18,555 women, aged between 24 and 42, without a history of infertility, who had tried to become pregnant or had became pregnant between 1991 and 1999. The women were part of a much larger study of 116,000 women in The Nurses’ Health Study II.
Every two years the women completed a questionnaire that asked if they had tried to become pregnant for more than a year without success, and what the cause was if they had been unable to conceive. The women also supplied information on how often, on average, they had consumed certain foods and drinks during the previous year. During the eight years, 438 healthy women reported infertility due to an ovulatory disorder.
After adjusting for various factors such as age, parity, body mass index, total calorie intake, physical activity, smoking, drinking and contraceptive use, the researchers found that women who ate more than two portions a day of low fat dairy foods were 85 per cent more likely to be infertile due to ovulatory disorders than those who only ate it less than once a week. and a 27% decreased risk of infertility for women eating full-fat dairy foods (including ice cream) one or more times a day compared to women eating a serving one or fewer times a week.
The study found no links between normal intake of lactose, vitamin D, calcium and phosphorous and infertility due to ovulation disorders.
Once a Women trying to get pregnant, she should consider changing low-fat dairy foods for high-fat dairy foods. A fat-soluble substance in the full-fat dairy foods could be responsible for improved ovarian function.