Our president probably knows the basics about HIV/AIDS: how it's transmitted, the populations most at risk and that an HIV diagnosis is no longer a death sentence. Here's one aspect of the U.S. HIV epidemic he may be less likely to appreciate: Of the approximately 1.2 million people living with HIV in the United States today, over half are age 50 or older. As folks with HIV grow older, their needs change, and treatment and care become paramount. Research by ACRIA and others have found that over the years, health problems can multiply, isolation and loneliness can deepen and self-care may become more challenging. For many long-term HIV survivors, these challenges are compounded by the psychological toll of living for years believing that they would die young and the loss of many of their peers to the complications of AIDS. Rumors are swirling about what the Trump administration will do to the Affordable Care Act, the Ryan White Program and Social Security/Social Security Disability Income. These are all programs that older adults with HIV depend on. I want President Trump to understand that those aging with HIV are resilient, but also vulnerable. I would implore him to take great care when tinkering with programs that are so vital for this population. So much depends on it.