WASHINGTON (Gray DC) - It can help anxiety, aid sleep or even clear up acne. That’s what some CBD advertisements claim. CBD, or cannabidiol, is a chemical found in marijuana and hemp plants. It doesn’t give you a high, but users and advertisers claim it can help a host of health issues. One expert told us there’s no scientific proof it works. Theodore Caputi is a public health researcher. He conducted a study on how some medical marijuana companies market CBD.