I want to say that sneakers are different. There are running shoes that have been approved by the Podiatrist Association for their health benefits. And besides, there are sneakers that protect your joints from shock load not only when running, but even when walking, minimizing the risk of injury and contributing to a change in foot technique when running. They allow you to quickly recover from workouts, provide protection for your knees, ankles and hip joints when running and walking. And all this together - useful physiological shoes MBT. And it just helps with flat feet and bone development. So you need to choose the right shoes. If you are interested, then take a look at the site yourself and read the reviews of mbtshoes.ru. Better yet, just measure it and compare it with your regular shoes and you will understand that only it will save you.
I also suffer from flat feet since childhood. But after buying orthopedic insoles, I began to walk much more comfortable and easier than before. It is very convenient to transfer insoles from one pair of shoes to another. But this only applies to closed shoes, even with heels. At least to work, at least to the exit, but without them I cannot go out in any way.
You need to consult a full-time orthopedist. Determine the degree of flat feet, its shape, as well as see how your shoes correspond to this pathology.
If necessary, specialists will make you individual insoles that can be used in any shoe.
I can't wear other shoes, because I have flat feet and hallux valgus
You can, if you choose a comfortable model and buy orthopedic insoles. There is an even more reliable option - tailoring shoes to order. They will make it under your foot so that it is almost perfect and will cost less than in the store, because the price will not include brand awareness, transport and customs clearance fees, and store lease.
Harm from wearing sneakers? Hardly. Rather, on the contrary, sneakers are most often made more orthopedic than ordinary shoes - there is a lining of the arch of the foot, a separate heel (heel), a special sole, etc. Orthopedic sneakers are easier to find and buy than shoes, for example. In an amicable way, all sneakers must be orthopedic, because it is a sport style tailored for running and walking.
Do not wear flat sneakers. Well, the classic advice - do not wear the same shoes every day. Have a spare pair - it's a matter of hygiene. Airing, drying, etc.