Recognizing when your teen’s friend might need help

Most teenagers go quiet sometimes, sleep oddly, and seem to live on toast for a week. That is ordinary. The harder question is how you tell ordinary moodiness apart from a teenager who is genuinely struggling, especially when the teenager in question is not your own but your child’s close friend.

Parents often end up in this position without warning. Your teenager mentions, almost in passing, that a friend “hasn’t been right lately,” or you notice it yourself when the friend is over: quieter than usual, barely eating, gone from the group chat. You are not that teenager’s parent. You do not have the full picture. But you are an adult they trust, and sometimes that puts you in a useful position to help, carefully.

What tends to separate ordinary teenage ups and downs from something more serious

A single bad week rarely means much. What matters more is the pattern: how long it has lasted, how many areas of life it touches, and whether it is a change from how that teenager usually is.

Signs worth paying attention to, especially when several appear together and persist for more than two weeks:

• Seeming sad, flat, or withdrawn most of the time, not just after a bad day
• Pulling away from friends, activities, or things they used to enjoy
• Noticeable changes in sleep, eating, or energy
• Trouble concentrating, or grades slipping without an obvious reason
• Increased irritability, anger, or snapping at people who did not do anything
• Talking about feeling worthless, hopeless, or like a burden
• Risk-taking that is new or escalating: drinking more than usual, using drugs, dangerous stunts
• Self-harm, or talk of wanting to hurt themselves or not wanting to be here

A good general rule: one or two signs for a short stretch is probably a rough patch. Several signs together, lasting weeks, and getting in the way of daily life, is worth taking seriously.

If a teenager tells you or your child they are thinking about suicide or self-harm, or you see signs of it

Treat this as urgent, not as something to quietly monitor. Tell the teenager, and tell your own child, that this needs an adult who can get proper help involved right away, such as the teenager’s parent, a school counsellor, or a doctor. Do not promise to keep it secret. If the teenager seems to be in immediate danger, contact your local emergency number or take them to an emergency department straight away. Find A Helpline lists free, confidential crisis lines in more than 150 countries if you need somewhere to start.

Why drug or alcohol use raises the stakes

A teenager who has started drinking heavily, smoking cannabis regularly, or using other substances is not only dealing with the substance itself. Often, the substance use is sitting on top of something else: anxiety, low mood, or a way of coping with a problem that has not been named yet. The two tend to make each other worse. Heavy cannabis use in particular has been linked, in large recent studies, to a meaningfully higher risk of psychosis, bipolar disorder, depression, and anxiety developing in the next few years, with the risk highest for those who start young and use frequently. That is a separate article’s worth of detail, but it is one of the reasons a change in a teenager’s substance use is worth noticing rather than dismissing as “what teenagers do.”

What you can actually do, as the parent of their friend

You are not their therapist, and it is not your job to diagnose anything. A few things are genuinely within reach:

• Mention what you have noticed, gently, to your own teenager. “I’ve noticed Priya seems really flat lately, has she said anything to you?” opens a door without putting your child in an awkward spot.
• If the friend is at your house and you are concerned, say something simple and direct to them. “You seem like you’re having a tough time. I just want you to know I’m around if you want to talk, or if there’s anything I can help with.” You do not need the full story.
• Encourage your own teenager to keep checking in, rather than letting the friendship quietly drift because things feel heavy. Loneliness tends to make things worse.
• If you are genuinely worried, it is reasonable to contact the friend’s parent, even though this can feel like overstepping. A simple, non-alarming version works: “I don’t want to intrude, but I wanted to mention that I’ve noticed [name] seeming low lately, in case that’s useful.”
• Know where the actual support sits. A school counsellor, a GP, or a mental health professional can assess and help in ways a well-meaning adult friend cannot. Our piece on who can actually help, and what confidentiality means covers the realistic options.

When it is not your place to step in

If your relationship with the teenager is distant, if stepping in would damage trust with your own child, or if you are unsure, the safest move is usually to support your teenager in being a good friend rather than intervening directly yourself. Our article on helping your teen support a struggling friend covers what that actually looks like in practice.

This is a sensitive area, and if you are supporting a teenager through a genuinely difficult time, it is worth having your own source of support too, whether that is another parent, the school, or a professional who works with young people.