Oct 12, 2011
Women-Vitamin Study, This week a new study which found a higher risk of death among women who used certain supplements. It's a complicated study, only white women ages 55 to 69 were enrolled in the study and they were followed for 22 years.
Those taking calcium supplements had a 3.8% reduced risk of death. The calcium benefit ended, when taking more than 900 mg per day from supplements. Experts suggest many older women who take calcium supplements may not have to.
The mineral associated with an increased risk of death was iron, which showed a risk increase of 3.9% the risk increased as the dose increased, over 50 mg per day. The study grouped dosages of under 50 mg together, making it hard to determine the risk of low dosages of iron, such as what's in multivitamins. They said there is little reason why a postmenopausal woman should be taking iron.
Other supplements also had an increases in the risk of death in the study: multivitamins (2.4%), vitamin B6 (4.1%), folic acid (5.9%), magnesium (3.6%), zinc (3.0%), and copper (18.0%).