A medical personnel will advise such person to abstain from gambling activity, generally abstain from any form of negative emotion and pressure since it’s not advisable to gamble at that state. If the person is well matured enough to handle gambling loss then I see no wrong definitely gambling is unpredictable so it’s quite understandable anyone who decides to gamble is ready to face any outcome. Anyone with difficulties or facing challenges of such relating to heredity might consider other activity not gambling.
I've often observed or noticed that people who have high blood pressure or heart problems are often very stubborn, and this actually is a contributing reason for the condition they have, because when someone is stubborn, they tend to be short-tempered as well since if something they wish to have or do and their wish isn't fulfilled, they become angry, and that becomes the reason for their blood pressure to shoot up. So even if such people are advised to not do a certain thing, they won't easily listen or understand, especially if it's gambling which is already an addictive activity.
Well, there might be some people around them whom they listen to, such as maybe their parents, or someone they love the most, it could be anyone, so if that person tells them not to do something because it's not good for their health, and if they show love and care for them, they might rethink and change their mind, but if there is no such thing involved and they are simply told not to do it when they want to, I don't think they will stop. Gambling is really really a dangerous addiction.