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Male hormonal contraceptives applied daily to the skin reduce sperm production, finds a new study to be presented Sunday at The Endocrine Society's 94th Annual Meeting in Houston. Very low sperm counts resulted for about 89 percent of men using a new combination of hormones, the authors reported. They combined a transdermal (skin) gel containing the male hormone testosterone and a gel containing a new synthetic progestin called Nestorone. "This is the first time that testosterone and...