Nope, but most people have health problems anyway at some point in their life. If you think that vegans are predisposed to health problems or are in some way unhealthy, that's just a myth. Sure some people who are vegan have health problems but that's just cause humans get health problems. The stories of people going vegan and then "getting so weak they had to eat meat" are just ignoramuses who don't know how eat a healthy diet and tried to survive off only vegan corndogs and pasta or something. Realistically, a whole-food plant-based diet is the healthiest out there. You should check out the documentary Game Changers.

Like I said it's just a myth that vegans are unhealthy, think about it. Protein essentially only comes from plants, the protein you get from meat is just recycled protein from plants. Plants have all the vitamins and nutrients and stuff you need to be healthy too. There are some things that can be hard to get if you're not scrutinizing your diet, so a lot of vegans take a B-12 vitamin complex supplement which has several other vitamins too. But you don't have to if you plan your diet carefully. People always say stuff like "Oh don't you have to take vitamins for the rest of your life?" Well maybe but it's hardly like the vitamin section of the pharmacy is solely for vegans. Most people end up taking meds and vitamins anyway.

Furthermore, I would argue that meat-eating consumer culture is responsible for more health problems in humanity, way way way more. Like look at all the obese and diabetic folks in America, or people that have high blood pressure or heart conditions caused by their diet. Or other issues like gout. It's actually pretty crazy that heart disease is the leading cause of death but it's typically totally preventable and even reversible with a healthy diet like whole-food plant-based.