Eth. Fontham et al., EFFECT OF BETA-CAROTENE SUPPLEMENTATION ON SERUM ALPHA-TOCOPHEROL CONCENTRATION, Cancer epidemiology, biomarkers & prevention, 4(7), 1995, pp. 801-803
Conflicting reports of the effects of beta-carotene supplementation on
serum alpha-tocopherol concentration led us to evaluate serum alpha-t
ocopherol in subjects with and without beta-carotene (30 mg/day) suppl
ementation for up to 2 years duration in an ongoing chemoprevention tr
ial, No adverse effect has been observed at any of the time periods ex
amined.