Vitamin C exhibits pro-oxidant properties
Article Abstract:
There is a pro-oxidant, as well as an antioxidant, effect in vivo in vitamin C administered as a dietary supplement to healthy humans. It has been established that supplementation of diets with 500 mg per day of vitamin C leads to a substantial rise in ascorbate levels in the plasma compared with both pre-supplementation and placebo. After a washout period, vitamin C levels return to the concentrations seen at baseline and in the placebo. It is possible that at doses of less than 500 mg per day the antioxidant effect predominates.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1998
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Nicotine withdrawal and accident rates
Article Abstract:
Regular smokers who stop smoking are known to exhibit mood and cognitive performance deterioration within hours of abstaining. The question of whether such psychological deficits cause major disruption in everyday activities is considered. This uses a new method comparing a measure of performance on No Smoking Day (NSD) in the UK with performance on Wednesdays before and after NSD. The data indicates that the effect of nicotine withdrawal could be detected in daily activities.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1998
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