I think so, but I don’t know. If it doesn’t affect you now while you’re young, it probably will catch up eventually. I have a lot of trouble managing eating and drinking properly and it increasingly has taken its toll after many years.
Things that work in your 20s can start to catch up to you in your 30s, and the negative effects can hit you before you know what happened.
I feel great when I eat a very strict diet like this. It is vegan, but I think it would benefit from adding a couple of eggs per week. My problem is that I tend to be all-or-nothing and if I add the eggs, the rest of it falls apart.
Side note: I have a strong feeling that vitamins and supplements are unhealthy. See also: “Stop Wasting Money on Vitamin and Mineral Supplements” and this discussion. Just a personal opinion though.
I’ve read that the sugars in fruits are okay if you eat the whole fruit. The more sugary fruit has, the more fiber it contains, and that offsets the sugar absorption. This isn’t the original article that I read, but it’s on the same topic:
https://well.blogs.nytimes.com/2013/07/31/making-the-case-for-eating-fruit/