Fasting and starving yourself aren't the same. Starving is either being out of food without fat reserves or eating too little each day so your body never switches over to burning fat stores. Fasting is overall pretty safe and becoming better studied recently.

I've been fasting every other day since October and used it to lose 50 LBS. I've felt pretty great the whole time and eat high protein/take a multivitamin on eating days to make sure I don't run into any issues. Occasionally I drink electrolytes on fasting days if I'm being active. Many also do time restricted eating without issues