Medications
Certain medications can cause osteoporosis. These include;
Breast cancer drugs: Drugs taken for treatment of breast cancer are highly harmful to the bone. They prevent estrogen production in the body, which causes extremely low blood levels of estrogen.
Heartburn drugs: Medications taken for the treatment of heartburn reduces the amount of acid produced in the stomach, lower stomach acid affects the absorption of calcium from food. Proton pump inhibitors are a very good example of heartburn drugs that if used for a long term (several years) at high doses, will increase the chances of having fractures.
Other medications [3] can cause OST as a side effect, including prostate cancer drugs, glucocorticoids, and depo-provera.
References:
[1] https://www.nof.org/patients/what-is-osteoporosis/#:~:text=Osteoporosis%20is%20a%20bone%20disease,from%20sneezing%20or%20minor%20bumps.
[2] https://www.medicinenet.com/script/main/art.asp?articlekey=20363
[3] https://www.everydayhealth.com/news/osteoporosis-drugs-safe-dangerous/#:~:text=While%20the%20common%20side%20effects,scared%20many%20people%20away%20from