Soy unlikely to trim body fat after menopause

	Tweet

Estrogen-like compounds found in soy won’t help limit body fat in post-menopausal women, new research shows.

Animal studies and small studies in humans have offered some evidence that these compounds, known as isoflavones, could help build muscle mass and reduce fat mass, Dr. Oksana A. Matvienko of the University of Northern Iowa in Cedar Falls and her colleagues write in the journal Menopause.

It’s unclear why such compounds might have any effect on body composition, but it’s possible that they might act as estrogen does, to affect hormones that play a role in fat and sugar metabolism.

To investigate whether isoflavones might help women avoid putting on fat after menopause, the researchers enrolled 229 postmenopausal women in their study, none of whom were severely obese. The women were randomly assigned to take a placebo - also known as a dummy pill—a tablet containing 80 milligrams of soy isoflavones, or a 120-milligram isoflavone tablet every day for a year.

The isoflavones had no significant effect on women’s bodies, the researchers found, nor did they affect levels of insulin, leptin, ghrelin, or adiponectin, hormones that help regulate appetite. The researchers did find a relationship between all of these “appetitive hormones"-aside from insulin-and body composition, but the only factor that predicted changes in fat mass was the amount of fat in a woman’s diet.

And the longer it had been since a woman’s last period, the higher her fat mass.

While the current findings found no effect of isoflavones, Matvienko and her colleagues say, it is possible that other compounds found in soy could influence body composition.

For now, though, the researchers say that they “cannot recommend” that healthy women take soy isoflavones to reduce body fat.

SOURCE: Menopause, online February 5, 2010.

RELATED STORIES:
Critical element that improves vascular function in postmenopausal women found   Young Minority Women Screened at Higher Rate for Chlamydia than Young White Women   White House sticking to contraception plan   Study indicates that induced labor may not lower risk of infection or respiratory problems in newbor   Suit wants “morning-after pill” available to girls   Breast Cancer Prevention Drug Shown to Decrease Bone Density and Structure in Postmenopausal Women   Study Evaluates Antibiotic Option for Treating Bladder Infection in Women   Competitive Soccer Linked to Increased Injuries and Menstrual Dysfunction in Girls   Pfizer Birth Control Recall: Could Women Who Get Pregnant Sue?   A Mom’s Guide to Birth Control   Study clouds evidence on soy and menopause   Don’t blame C-sections for fat children: study   Removal And Storage Of Ovarian Tissue Enables Birth After Cancer Treatment   NIH study shows caffeine consumption linked to estrogen changes   Impoverished Afghan woman gives birth to sextuplets

Comments

[ + Post Your Own ]

Now you're in the public comment zone. What follows is not Armenian Medical Network's stuff; it comes from other people and we don't vouch for it. A reminder: By using this Web site you agree to accept our Terms of Service. Click here to read the Rules of Engagement.

There are no comments for this entry yet. [ + Comment here + ]