Is the keto diet safe

I don’t think it’s a good idea. A co worker told me about doing this diet. She told me she looked at ingredients of white keto bread and regular bread. There is more fat in keto bread then regular bread. It’s pretty much same as Zero soda, diet soda it’s safer to drink regular soda then Zero and diet soda. They have to put things in it to make it taste better. Everything is going Zero now. I buy regular Orange, apple, cranberry Juice before I buy zero or diet juices