Downsides to having a mid face lift (or cheek lift) under the age of 30?

Helllo firmafestGenerally better to do  it at a later age, there are other options. I would advice you schedule a consultation with a board certified plastic surgeon.

In our practice, we perform a non-surgical face lift / skin resurfacing treatment using Renuvion Helium Plasma Radiofrequency. ​To get the most improvement with skin tightening, we combine Renuvion (formerly J-Plasma) with lasers (Fraxel, Clear + Brilliant, CO2), microneedling/PRP, Ultherapy and InMode FaceTite. I suggest getting a formal evaluation with a cosmetic dermatologist. Best, Dr. Emer​​​​

It is good you are asking questions.  Without pictures it is difficult to recommend anything.  Having said that, you are looking for a specific change in your facial appearance.  I assume you want to do a cheek lift because you feel that procedure will get you the look you want.  I would recommend having a consultation about your goals and have an "expert" give you recommendations about which if any procedure will get you closer to your goals.  There are potential downsides for any procedure.  3 questions: What do you want (specifically)? What are worthwhile options (whats worth doing)? What should I expect as realistic potential results?  You are young but want to change the appearance of your cheek area.  That is different from someone who has aged and the cheeks have drooped.  Cheek lifts are rare, really rare to be performed in people your age.That is why most surgeons without meeting you will be very cautious.