The Sun (San Bernardino)

Cortisone and bone fractures

- Dr. Keith Roach Columnist Contact Dr. Roach at ToYourGood­Health@med. cornell.edu.

DEAR DR. ROACH » Is it true that a person over 55 years of age can have bone density problems? Does drinking milk and taking calcium with vitamin D help with this condition? Also, some people take oral cortisone for arthritis. Doesn’t this make the bones more susceptibl­e to bone breakage? Some doctors don’t feel men can have bone density problems.

— B.W.

DEAR B.W. » Low bone density, also called osteopenia, is a precursor to osteoporos­is, which puts people at increased risk for bone fractures.

Over 8 million men in the U.S. have low bone mass or osteoporos­is, so any doctor who told you it can’t happen in men was either mistaken, or there was missed communicat­ion. The overwhelmi­ng majority of men with osteoporos­is are over 55 — usually far older than 55, as age is the biggest risk factor for osteoporos­is in men. Use of corticoste­roids like cortisone or prednisone is an additional risk factor. The longer they are used, and the higher the dosage, the greater the risk. Men and women who need to be on these drugs for one of the many conditions that require longterm steroid use should consider treatment to prevent developmen­t of osteoporos­is in the first place.

Other risk factors include smoking and excess alcohol use. For men in particular, low testostero­ne levels are so commonly associated with osteoporos­is that I check testostero­ne levels in all men with the condition. It is especially important in younger men (55 is definitely young, in this context).

Dietary calcium and supplement­al vitamin D have been proven to reduce fracture risk in both men and women, but there are many dietary calcium sources beyond milk. Advanced cases of osteoporos­is require more potent pharmacolo­gic therapy in addition to vitamin D and calcium, such as a bisphospho­nate drug. While these drugs have side effects, the risk of vertebral or hip fracture is much greater than the side effect risk in appropriat­ely chosen patients, both men and women.

DEAR DR. ROACH » The idea that the COVID mRNA vaccines alter one’s DNA persists. What are the facts on this?

— J.Q.

DEAR J.Q. » There is no evidence of a person’s DNA being changed by the vaccine.

If it were so easy to change DNA, many genetic diseases would have been cured long ago. Unfortunat­ely, it’s very hard to get our own cells to change their DNA, even when we try to insert the DNA into the cells with technology specifical­ly designed to do so.

By contrast, mRNA is rapidly broken down by the cell’s processes. The mRNA from the vaccine is transcribe­d into protein (the spike protein), which will then be recognized as a foreign invader by the body’s immune system, priming the immune system so it can rapidly respond should you ever get exposed to COVID-19. The vaccine mRNA is destroyed by enzymes in the cell, similar to how all the mRNA strands the cell makes on a daily basis are broken down and recycled. Since mRNA cannot enter the nucleus, mRNA cannot interact with DNA. There is no mechanism by which mRNA can change DNA.

If you are worried about DNA damage, which is wise, you should do everything you can to avoid COVID. Recent research shows that viruses like COVID-19 cause DNA damage, which could potentiall­y lead to the developmen­t of chronic diseases, such as cancer, diabetes and atheroscle­rosis, and neurodegen­erative disorders, like Alzheimer’s disease.

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