Skip to content
My WebMD Sign In, Sign Up

Weight Loss & Diet Plans

Font Size

Calcium May Curb Middle-Aged Spread

Study Shows Biggest Benefit in Women, But Makes No Promises
By
WebMD Health News
Reviewed by Louise Chang, MD

June 30, 2006 -- Women who take calcium supplements may gain slightly less weight over the decade or so between their mid 40s and mid 50s than those who don't take them.

So says a study in July's issue of the Journal of the American Dietetic Association.

The study shows that of 5,341 women aged 53 to 57, those taking at least 500 milligrams of calcium each day gained about 11 pounds after age 45, compared to 15 pounds for those who didn't take the supplements.

Calcium gotten from foods didn't affect the results.

The 5,250 men who took part in the study didn't see the same benefit in weight control from calcium supplements.

About the Study

The study was funded by the National Cancer Institute. Researchers included Alejandro Gonzalez, MS, of Seattle's Fred Hutchinson Cancer Research Center.

Participants had volunteered for a long-term study of vitamin and mineral supplements and cancer risk.

But for this particular report, Gonzalez and colleagues didn't focus on cancer. Instead, they checked data on participants' weight gain from their mid 40s to mid 50s.

Participants had reported their weight eight to 10 years earlier, when they were 45. They also noted their physical activities, age, smoking status, height, diet habits, and current and past use of calcium supplements.

Men were "much less likely" than women to be currently taking calcium supplements, the researchers note. Fifteen percent of the men were taking calcium supplements, compared to 53% of the women.

Weight Gain Was Common

Participants typically reported gaining some weight after age 45, regardless of calcium- supplement use.

Postmenopausal women taking at least 500 milligrams daily of calcium supplements, and who hadn't taken hormone replacement therapy, gained the least weight, the study shows. Those women gained about 10 pounds, compared to the 11-pound average for all women in the study taking supplements, and the 15 pounds gained by women not taking them.

It's possible people who take calcium supplements have other healthy habits that help keep their weight in check. But the results held after researchers took that into account.

It's too soon to recommend calcium supplements for weight control, say Gonzalez and colleagues; more studies are needed first. They point out that people don't always report their weight or supplement use accurately, and that people who volunteer for studies like this one may not be typical of the general public.

Also, the study was purely observational. Participants weren't asked to take calcium supplements. So the findings don't prove that the supplements curbed weight gain by themselves.

For now, Gonzalez and colleagues write that "calcium supplements taken for other reasons (e.g., prevention of osteoporosis) may have a small beneficial influence on reducing weight gain, particularly among women approaching midlife."

Today on WebMD

vegetables
Video
Woman trying clothes / dress
Assessment
 
Woman looking at reflection in mirror
Article
Hot cup of coffee
Quiz
 
woman shopping fresh produce
Video
butter curl on knife
Quiz
 
eating out healthy
Article
Smiling woman, red hair
Article
 
6-Week Challenges
Want to know more?
Chill Out and Charge Up Challenge – How to help your tribe de-stress and energize.
Spark Change Challenge - Ready for a healthy change? Get some major motivation.
I have read and agreed to WebMD's Privacy Policy.
Enter cell phone number
- -
Entering your cell phone number and pressing submit indicates you agree to receive text messages from WebMD related to this challenge. WebMD is utilizing a 3rd party vendor, CellTrust, to provide the messages. You can opt out at any time.
Standard text rates apply
thumbnail_woman_tossing_spinach
Video
lunchbox
Article
 
What Girls Need To Know About Eating Disorders
Article
teen squeezing into jeans
fitfor Teens
 

Special Sections