My experience is quite different, no surprise, since my genetics are likely quite different. 😀
Because of fear of heart disease, I tried to cut out meat and eggs and dairy. Yet every 2 weeks or so, I just had to have some meat, like a juicy hamburger. That would set my systems back to normal. Found out that I was starving myself of protein. And only meat sources could fulfill that. Plus I still got heart disease anyway. Since going back on meat, I've been a whole lot healthier. And it was the junk carbs that was doing me in.
In addition, many fruits and vegetables are 50% or more less nutritious than they were in 1950. At least in the USA... So in my mind, supplementation is a must.