This document discusses the relationship between substance use and HIV/AIDS. It notes that between 55,000-60,000 people in the US become infected with HIV each year, totaling over 1.1 million currently infected. Scientists have found that alcohol use can contribute to the spread of HIV/AIDS and impact treatment for infected patients in several ways: by impairing judgment and leading to risky sexual behaviors, causing delays in getting tested for HIV or seeking treatment if positive, and making it difficult for infected patients to adhere to complex medication regimens.