Is it safe to eat non organic yogurt if it states it is made from cows not treated by rbst hormones? or better to go organic?

Cows on hormones: My assessment is that there is no evidence that cows with or without hormones make a healthier milk and yogurt. What kind of evidence would l like to see? A proper trial of say 20,000 folks randomly allocated to hormone or non-hormone yogurt and followed for say 10 m then 20 then 30 years to see which group is the healthiest. Probably will never be.done.