Balding men may soon be able to grow their hair back by popping a pill, the pharmaceutical firm Merck & Co. announced Sunday.
But a full head of hair may have a price men are unwilling to pay, the researchers said. Side effects include decreased libido and difficulty achieving erection.
Sixty-five percent of moderately balding men who took the drug Propecia daily for a year grew hair, compared with 37 percent of men who took a placebo, said Merck researcher Keith Kaufman, who presented the initial findings of his study at the American Academy of Dermatology convention.
The researchers, who tattooed a 1-inch circle on the scalps of the 1,550 men under age 45 in the study, found a 107-hair improvement among men taking Propecia, Kaufman said.
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