Just fruits? No that would basically be a death wish. You can find a handful of people who claim to have done it for long periods of time and survived.

But if all plants are on the table? You’re 100% in the clear. Keep an eye on your protein and shoot for lots of variety for your best bet. If you see a doctor regularly they should be able to detect problems before they become big problems. A lot of times “junk food vegans” can have issues, so put some time into learning how to make balanced meals.

If you don’t actually have any ethical problems with consuming meat or animal products, having meat once or twice a month will allow you to reap virtually all of the health benefits of being plant based while simplifying lots of things, nutritionally as well as socially