Abstract:
OBJECTIVE:To test whether alternate day vitamin E affects the incidence of age-related macular degeneration (AMD) in a large-scale randomized trial of women. DESIGN:Randomized, double-masked, placebo-controlled trial. PARTICIPANTS:Thirty-nine thousand eight hundred seventy-six apparently healthy female health professionals aged 45 years or older. INTERVENTION:Participants were assigned randomly to receive either 600 IU of natural-source vitamin E on alternate days or placebo. MAIN OUTCOME MEASURES:Incident AMD responsible for a reduction in best-corrected visual acuity to 20/30 or worse based on self-report confirmed by medical record review. RESULTS:After 10 years of treatment and follow-up, there were 117 cases of AMD in the vitamin E group and 128 cases in the placebo group (relative risk, 0.93; 95% confidence interval, 0.72-1.19). CONCLUSIONS:In a large-scale randomized trial of female health professionals, long-term alternate-day use of 600 IU of natural-source vitamin E had no large beneficial or harmful effect on risk of AMD.
journal_name
Ophthalmologyjournal_title
Ophthalmologyauthors
Christen WG,Glynn RJ,Chew EY,Buring JEdoi
10.1016/j.ophtha.2009.10.043subject
Has Abstractpub_date
2010-06-01 00:00:00pages
1163-8issue
6eissn
0161-6420issn
1549-4713pii
S0161-6420(09)01283-4journal_volume
117pub_type
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