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Biotech / Medical : Ligand (LGND) Breakout!
LGND 190.43-0.7%Feb 6 9:30 AM EST

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To: Andrew H who wrote (7774)9/26/1997 4:55:00 PM
From: Henry Niman   of 32384
 
Here's another study showing increased risk of breast cancer for women on hormone replacement therapy for 10 or more years. Interestingly, the risk was higher when the hormone was opposed by Progesterone:

Long-Term Hormone Replacement Increases Breast Cancer Risk

WESTPORT, Sep 26 (Reuters) - Women who use hormone replacement therapy,
particularly with adjunctive progestins, for more than 10 years may be at a "moderately
increased" risk of breast cancer, according to the results of a nested case-control study
conducted in Sweden.

A team of researchers at the University of Uppsala led by Dr. Ingemar Persson
identified 435 cases of incident breast cancer patients over 5 years among a cohort of
some 36,000 women who participated in mammography screening. The cases were
matched to 1,740 controls.

The use of hormone replacement therapy (HRT) of any type "...for more than 10 years
was linked to a doubled risk of breast cancer." The risk was particularly elevated in
women who used estrogen-progestin combinations compared with those using
estrogens alone, with the odds ratios for more than 10 years of use being 2.4 and 1.3,
respectively, compared with nonusers of HRT.

Dr. Persson and colleagues point out in the September 4 issue of the International
Journal of Cancer that these findings should be taken into account "[w]hen assessing
the overall risks and benefits of HRT."

Int J Cancer 1997;72:758-761.
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