Increased vegetable consumption enhances plasma vitamin C and carotenoid concentrations, but not resistance of LDL to oxidation. The relative bioavailability of lutein from vegetables is higher than that of beta-carotene.
Oral contraceptive steroids increased the residence time of caffeine in 9 young women by a factor of 2. The effect was already manifested during the first cycle 2 weeks after starting oral contraceptive steroids (OCS) and was slightly increased in the second cycle, after 6 weeks on OCS. Toxic effects attributed to oral contraceptive steroids may in part be indirect and due to prolonged retention of absorbed toxic agents to which women are exposed.
The underlying causes and rationale for treatment of recurrent abortion are not entirely clear. The Euro-Team early pregnancy protocol was developed as a diagnostic work-up based on the evaluation of risk factors. Possibilities for therapy can be based only on the expectancy that elimination of some risk factors may improve the prognosis.
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