The exact causes of PMS aren’t known, but health experts suspect that certain essential dietary fats, called polyunsaturated fatty acids, or PUFAs, may play a role. Not getting enough of and the right types of PUFAs may worsen PMS symptoms.
Researchers set out to test this theory by enrolling 120 women into a six-month study. The study authors randomly selected the women to receive a daily 1- or 2-gram PUFA supplement, or a placebo (no fatty acids).
Blood levels of cholesterol and prolactin, a hormone produced in the body that may affect PMS, were tested before and after the study. The women kept symptom diaries to track the details and severity of their PMS from month to month.
After 6 months, the researchers found that compared with the initial PMS ratings:
None of the women in the study experienced significant changes in blood levels of cholesterol or prolactin. This suggests PUFA supplements do not raise cholesterol in otherwise healthy women experiencing PMS, nor exert their anti-PMS effects through changes in prolactin levels.
If you are interested in trying a PUFA supplement, keep the following tips in mind:
(Essential fatty acids for premenstrual syndrome and their effect on prolactin and total cholesterol levels: a randomized, double blind, placebo-controlled study. Accessed January 20, 2011; Available at: NewsRelease_Essential_oil pill_prevents_PMS.pdf)
Suzanne Dixon, MPH, MS, RD, an author, speaker, and internationally recognized expert in chronic disease prevention, epidemiology, and nutrition, has taught medical, nursing, public health, and alternative medicine coursework. She has delivered over 150 invited lectures to health professionals and consumers and is the creator of a nutrition website acclaimed by the New York Times and Time magazine. Suzanne received her training in epidemiology and nutrition at the University of Michigan, School of Public Health at Ann Arbor.