Researchers in Scotland and China released a study about the preliminary success of a male hormonal contraceptive that could provide men with a birth control option similar to that of the pill taken by women. Sixty-six men were given doses of desogestrel, the main ingredient in women’s birth control pill, and injections of testosterone. The synthetic hormone was found to stem the production of sperm with only minor side effects like weight gain, acne and mood swingsthe same side effects women experience while on the pill. After the study period, the men participating in the experiment resumed normal sperm production. More extensive studies will begin at the end of the year, making the male contraceptive available by 2005.