@missey
I do agree that it is best to build bones through diet/exercise when young/teen and young adult years. That lays the foundation for what you’ll have to work with later in life. Many women do not consume enough dairy/calcium or get enough vitamin D in their diets and may not do enough weight bearing exercise when young. If they smoke/drink/do drugs, bone building and health is not optimal in younger years. I believe many women suffer osteoporosis as a result later in life.