Whenever I go home, my parents treat me like a teenager again - how can I stop this from happening?

this shows the way you act them think like that maybe you need to be more serious in talking and show to them you grown person

Well if I were in the position I'd prove to them I'm grown up and am responsible. Or simply sit down and talk with them

The problem with parents is that even when you're 90 years old, they'll always be older than you so you're always going to be their baby ... BUT you can sit down with them, and maturely explain to them that you're an adult now so it might be time for them to change the way they "treat" you without having to change the way they "look" at you. You're their baby, but an adult baby ... if that makes any sense hahah

Make a list of your parents' behaviors that you dislike, let it sit for a week, then come back to it and see if you can add or subtract some. Then look at your final list - think about each behavior in terms of is origin and reasons it bothers you. Pick one or two that you feel are really taking away from the quality of your life when you are visiting your parents and talk to them about it. Voice your feelings about it and hear out what they have to say.

It's important to sit down with your parents and calmly discuss how they treat you. It's important to consider their perspective however, if they are unable to recognise your actions as that of an adult, it may be necessary to reduce the amount of time you spend with them depending on how you define 'treating you like a teenager'. Remember that, as an adult, you are able to make decisions for yourself and your parents should respect that while your parents' wealth of experience should also be acknowledged.

I don't think you can. Your parents will always see you as their baby. I can only assume they do it because they love and care about you and want what's best for you. But communicating to them that you are an adult and would appreciate that they didn't baby you or treat you like a teenager may get you somewhere with them - they may not realise they're doing it.

Sounds like you feel the need to stop your parents' habitual patterns of behavior. If you can direct that concern to change your behavior, you have a greater chance for conditions to improve. Conflict with parents and adult-aged-offspring, seems fairly commons, so you don't have to feel alone in this. Take a look for solutions online!

Try talking to them about it. It is hard for a parent to let go of their child and realize they are now an adult. Tell them you love them and appreciate the time they took to raise you and all that they have done for you, but... you are now out in the world living your life and would appreciate being treated as an adult.

It can take time for parents to adjust to the fact their children are grown and independent. I have experienced success through being patient, acting responsibly to help them transition, communicating openly as an adult. As you do this perceptions change for everyone's benefit. It is also necessary to begin to create your own boundaries. Determine the things that are important to you and always try to act from a place of compassion. Remind yourself of both perspectives as you learn to adjust the family dynamics.

Change cannot exist without communication - communication best begins with empathy. Open up a conversation with your parents next time that you visit home. Ask yourself, and then communicate clearly: - In which ways do my parents make me feel as though I am a teenager again? - Why might they be doing this? - What might they be feeling? What do they need? - How can I alter these actions, with my own responses and actions? - How can I help my parents cope with my adulthood, and adjust their behaviors accordingly? You parents may be feeling as though you've grown up too fast - many do, including my own! It's one possibility of many, but an offer of explanation, nonetheless. They may feel as though caring for you or treating you the way that they had while you were a teenager living under their roof offers some comfort or eases the reality of your ever-growing independence from them. It could be a crutch, for them - an emotional coping mechanism that helps them feel needed and loved. However, this feels overbearing and inappropriate to you as an adult. A good way to meet in the middle, without any person feeling hurt or left out, would be to say something like "Mom and Dad, I love you both and I really appreciate when you cook me dinner when I come home! I miss our home-cooked meals! But, I need you to respect and treat me as the wonderful, capable adult that you both raised me to be. Be confident in your job well done as my parents and examples, and let me be free of (ways they treat you like a teenager)." All the best!