Benefits of Iron Supplements Unclear for Pregnant Women, Young Children

By Tara Haelle

HealthDay Reporter

TUESDAY, March 31, 2015 (HealthDay News) -- Taking iron supplements during pregnancy doesn't appear to significantly change any health outcomes for mom or baby, a new review shows.

A second review -- this one on infants and toddlers -- found no evidence that iron supplements improved growth or development.

Both conclusions come from a U.S. Preventive Services Task Force (USPSTF) review of the latest research on iron supplementation and screening for pregnant women, babies and young children.

The USPSTF determined that there isn't enough evidence to recommend that pregnant women or infants and children receive iron supplements or be screened for iron deficiencies. But, they also noted there isn't enough evidence to recommend against either practice.

The recommendations regarding prenatal supplements are an unchanged update from those in 2006. What's new is that this study also finds no evidence to support routine screening.

"There is not enough research to demonstrate that women need to be routinely screened for iron-deficiency anemia or that they should routinely take iron supplements in the absence of symptoms," said Dr. Amy Cantor, lead author of the prenatal study.

"It is not particularly harmful to take an iron supplement, but it may not be necessary," added Cantor, who is an assistant professor of obstetrics and gynecology and family medicine at Oregon Health & Science University in Portland.

Generally, a healthy pregnant woman who does not have symptoms of low iron does not need any more than the 27 milligrams per day of iron that the Institute of Medicine recommends, Cantor said.

Her team analyzed the evidence from 11 trials on pregnant women routinely taking iron supplements. It found that supplements didn't affect women's quality of life or rates of C-sections, underweight newborns, preterm birth or infant death.

The researchers did find that women's iron levels improved with supplements. But, whether or not there is a benefit from this change is unclear, according to the investigators.

The researchers didn't find any studies looking at the benefits of screening for iron deficiency.

Not everyone was on board with the USPSTF recommendations.

Iron helps blood carry oxygen and nutrients throughout the body, so low iron levels can cause problems during pregnancy, said Dr. Andre Hall, an obstetrician and gynecologist at Birth and Women's Care in Fayetteville, N.C.

"In addition, if a mother is anemic, she has less reserve in cases of bleeding during delivery," he said.

According to Dr. Jill Rabin, co-chief of the division of ambulatory care at Women's Health Programs-PCAP Services in the North Shore-LIJ Health System of New Hyde Park, N.Y., doctors may still recommend that women take iron supplements and continue to screen for iron deficiency at the beginning of prenatal care and late in the third trimester.

"We still continue to recommend supplements and screening because we know iron helps carry the blood to the mom and the baby," said Rabin. "There are no major harms, and the benefits may be enormous, so we should just keep doing what we're doing and keep doing more research," she said.

The most common problems associated with taking iron supplements were nausea, constipation and diarrhea that went away on their own, study author Cantor said. Women can get iron through a diet rich in dark green leafy vegetables, various meats and seafood, beans, dried fruit and iron-fortified cereals, breads and pasta, she said.

The findings in infants and toddlers were similar to those for pregnant women, according to Marian McDonagh, a professor of epidemiology at Oregon Health & Science University in Portland, and lead author of that study.

McDonagh's team reviewed 10 trials they identified that measured effects of iron supplements in children aged 6 months to 2 years.

This entry passed through the Full-Text RSS service - if this is your content and you're reading it on someone else's site, please read the FAQ at http://ift.tt/jcXqJW.

from U.S. News - Health http://ift.tt/1MuKerv