A reader asks:

My 24-year-old daughter had a kidney transplant three years ago and will always be on anti-rejection meds. She cannot be in the sun or use tanning beds due to the increased risk of skin cancer. Is light therapy an option for her?

Answer:

You don’t say what your daughter would be attempting to treat with light therapy. But a light therapy device which filtered out virtually all UV (ultraviolet light) – for example, the light therapy box CET recommends – would eliminate the risk of UV exposure. First, however, you should make sure that none of your daughter’s meds are affected by the visible blue range.