>> Cheryl Maguire, The New York Times Published: 23 Feb 2021 01:49 PM BdST Updated: 23 Feb 2021 01:49 PM BdST Jessica McCabe's service dog-in-training, Chloe, retrieves her medicine in Seattle, Dec 22, 2020. The New York Times Jessica McCabe, creator of the YouTube channel “How to ADHD,” is not a doctor or medical professional. At 38, she’s had a variety of professions including stand-up comedian, actor and restaurant server. "); } Through all those years, she has been learning about attention deficit hyperactivity disorder, which she was diagnosed herself at the age of 12. Explaining that information is something she has done on her YouTube channel since 2016. “Our brains are a piece of equipment we work with every day for everything that we do, so it’s critical to understand it,” she said.