What is a one-sentence summary of the following article?
Before you run the risk of hurting your friendship over something trivial, first determine if you would want your friend to talk to you if you were exhibiting the same behavior. If you're not sure that you would, perhaps you should question if the behavior is really that risky. If you definitely would, then you should speak to your friend immediately about it. Issues that you wouldn't want to hold your tongue about are those in which your friend may be in danger or pose a danger to others. These include drinking and driving, unprotected sex, theft or using drugs. Before you talk to your friend, understanding why they are acting the way they are is often helpful. This allows you to go into your conversation with a clearer idea of what your friend is going through, which may provide you with more ways to help. Asking other friends or those around that person may help you figure out why they are behaving the way they are. You might mention to some other friends, "I've noticed Cassidy has been going out and drinking a lot lately. Have you noticed that, too? Are you concerned?" Many different psychological disorders cause people to behave in risky ways. Those with ADHD, Bipolar disorder, Borderline Personality Disorder, Schizoaffective Disorder, Obsessive Compulsive Disorder, or another mental health condition may be more inclined to exhibit risky behavior. Knowing if a mental health condition is the underlying reason for your friend's uncharacteristic behavior can give you ideas about how to get help, such as adjusting medication or going to see a doctor. If you are unsure of yourself and what to say, having other people who care about your friend there with you may be helpful. Additionally, asking a school counselor or addiction specialist to speak with your friend is beneficial, particularly if drinking or drug use is your concern. Professionals can answer questions and offer support that you may not be able to, and they are experienced in having these types of meetings, which may help things to stay calm and productive. You'll need to take your friend's personality into consideration when planning the meeting. If they are deeply private or even paranoid, they may react better to a one-on-one conversation. Having a group of people there may make them become defensive. If you witness your friend doing something extremely risky and dangerous, such as doubling their narcotic prescription, you may need to enlist the help of law enforcement and/or EMS. If you tell your friend to stop and they don't listen, call 9-1-1. Receiving assistance in this way is the best option in extreme situations. This will ensure their safety, your safety, and the safety of anyone else who is involved.

Summary:
Ask yourself if you would want to be told. Determine if there is a reason for the risky behavior. Enlist the help of others.