How is social habits related to holistic health?

How do the uv rays cause damage?   what exactly causes the skin to burn;   can you be more specific about this mechanism?   3. how do photosensitive medications increase a person's sensitivity to sunlight and therefore increase their risk of getting burned?     what kind of medications can increase photo-sensitivity, can you think of some examples?

Anne is 60 years old and rather frail. she fractured her forearm while playing with her grandson. that was two months ago, but her arm is still in a sling. which disease is she likely suffering from?

Agirl is working really hard in high school and decides to finish some of her classes early , what classes should she choose?