The point with yogurt and other products of curdled milk is the support this gives the stomach when you are on a temporary cure of penicillin.
That goes for humans as well as horses.
Once you are no longer on pencillin no need to touch the stuff.
If you really care about your health skip milk products altogether and start using fat cream and crème fraîche
real butter and cheese like French brie, refuse fresh fruit (except blueberries and raspberries) and carbohydrates to save your body from the very bad effects of sugar.
There is however no money for the food industry in this ancient lifestyle so you never hear about it.
Should you care to lose weight and enjoy a long healthy life you may find this rather useful.