About a year and a half ago, the FDA approved the Gilead Sciences ($GILD) pill Truvada to prevent HIV infection in high-risk patients. But demand has been slow to build, The New York Times reports. Some doctors are skeptical, and some men fear the stigma of using an HIV-prevention pill. Plus, younger generations of gay men aren't as fearful of HIV as older men are, the Times says. Report (sub. req.)