Archive for beta-carotene
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Cancer incidence in a cohort of Finnish male smokers
A total of 29,133 male smokers, aged 50-69 years, were recruited into the Alpha-Tocopherol, Beta-Carotene Cancer Prevention (ATBC) Study in 1984-1988. The nationwide Finnish Cancer Registry (FCR) recorded 5944 incident cases of cancer in this cohort through the end of 1999. Compared with the FCR data of the entire Finnish male population of same age [...]
Growth stimulation of human pulmonary adenocarcinoma cells and small airway epithelial cells by beta-carotene via activation of cAMP, PKA, CREB and ERK1/2
An alpha-tocopherol, beta-carotene supplementation trial (ATBC) and a chemoprevention trial with beta-carotene and retinoids (CARET trial) were conducted in the 1990s in populations at risk for the development of lung cancer. Both trials had to be discontinued due to significant increases in lung cancer and cardiovascular mortality. Clinical trials to test the cancer preventive effects [...]
Mortality in randomized trials of antioxidant supplements for primary and secondary prevention: systematic review and meta-analysis.
The study was led by the Cochrane Hepato-Biliary Group at Copenhagen University Hospital in Denmark. The researchers first analyzed 68 studies involving 232,606 people and found no significant effect on mortality — neither good nor bad — linked to taking antioxidants. When they eliminated the lower-quality studies and looked only at the most trustworthy ones, [...]
