I use food.
Lots of things that are good and healthy to eat contain calcium. It is of course all the dairy products but also nuts, seeds, and some vegetables.
Do your research and listen to your body.
The standard American diet is not our best friend. It is a money maker for all the big food corporations.
I am not a medical professional but I do read a lot and study the foods I eat.
Go back to nature with the foods you choose.
And remember that our bodies have an expiration date. Nobody gets out alive. And what you eat will help determine how well you are able to survive. Yes, genetics plays a big part and that is why you see people in families who get the same illness and diseases.
And also your mental attitude about life in general plays a big part in your health.
So choose to hang around people who think good thoughts and are smiling a lot.
This is all attitudinal philosophy but believe it or not it works much of the time.
Make fruits your sweet reward instead of sugar laden treats.
And do stretches every day. Your muscles need a reset from the burdens of life.
Hope some of this helps you.