No Stupid Questions

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

Being vegan takes a bit of nutritional awareness but it's not that difficult. You might want some vitamin supplements as people have said. Note that fruit isn't that much different from candy in terms of the sugar hit. I'm not vegan myself in terms of intentionally sticking to such a diet, but often my eating patterns end up going that way anyway, and it works out ok, at least for a while.

Just fruits would be very hard¹. But plant based diets are very common with minimal supplementation (vitamin b12 is needed and eventually vitamin D, folic acid, iodine, could be added if missing from your diet).

Look up Plant Based Whole Food diets (PBWF). A source I rather enjoy is the "vegan doctor" Dr. Greger and his "daily dozen": https://nutritionfacts.org/topics/daily-dozen/

Basically what he says is that if you manage to eat foods from all 12 groups every day, you probably have a good diet.

¹ Most fruits are just packets of sugar, water and some vitamins. If you include nuts you get more protein and fats. But you might not get enough variety of protein and vitamins from those.

Most people here are, correctly, pointing out that going fully vegan easily gets all your required nutrients except for B12. However, this is a mostly solved problem because while "naturally" humans would get it through consumption of animal products it's synthesized via bacteria and it's currently produced at scale via genetically modified strains, such as Propionibacterium Freudenreichii, and used to fortify things like plant based milks and nutritional yeast.

It is something to be aware of, but it's also not the problem many on this thread are trying to paint it as.

As long as you're not a cat.

Eat more beans.

If you are adding the plethora of generally available dried fruits to the mix, it should be manageable.

Though you might need to do some research if you intend on committing on fruit-only.

If I were to try something like that, I would have in mind that if things start going wrong I could just get some eggs for emergency.

Don't forget lemons and tomatoes. Also that some fruits are better off cooked.

Go for it. Do it one day a week for a while to see if you like it. You will.

You can't live on fruit alone because you need vitamin B12, which you can only get from animal products or supplements. Fruit is generally also low in carbohydrates, fats and proteins, all of which you need to live!

Not only fruits. Fruits and vegetables is possible, but it's pretty difficult to do safely. Lots of good advice in the comments already

Absolutely. You can get all the nutrition you need from plants. You have to eat complimentary items so you get all the protein etc that you need.

Going entirely vegan isn't the easiest thing to pull off for everyone, but you absolutely could cut out the vast majority of animal products that we consume. I think there's an argument to be made for a certain level of consumption of animal products - perhaps not from a moral standpoint but arguably from a health point of view.

Sorry if this sounds rude, but based on your comments it seems that you're just entering the early phase of the Dunning-Kruger curve on nutrition. Which means, you've started learning and are getting overly confident, despite not knowing that much in the grand scheme of things.

Don't make big dietary changes because you just read something online. Don't fall for fad diets. Don't quit eating a large group of foods because they vaguely feel "unhealthy". Learn about nutrition thoroughly, from reputable sources.

It's good that you're asking questions, though.

Except of some bananas, I actually don't eat many fruits or not at all, however I eat a lot of vegetables.

Yes.