It is a worldwide problem. We spend less time out of doors in the daylight and also tend to slap high factor sunscreen on and cover up with longer clothes. The trouble is the high factor sunscreen and long clothes means the body cannot absorb the sun rays to convert it into vit D, one study I read said we should have 20 mins per day in sun without sunscreen at all between 11-2. Then you have the other reports about sun causing skin cancer and that we must all wear high factor and wear long sleeved tops and long shorts.
So what do you do, I must admit I don't wear sunscreen on a daily basis unless I know I'm going to be outside a lot like gardening or day out somewhere. If I am popping in and out I won't bother and I drink 2 pints milk minimum per day and take calcium and vit D supplements as well. No idea of what my vit D levels are though.
Crohn's dx 1989, loop ileo 1992, end ileo 1992. Arthritis developed 1990 Stoma abcess 1995. Azathioprine started 1995. Panprocolorectomy 1999. Stillbirth 2000, antiphospholipid syndrome dx 2000. Flare up 2004, stoma abcess and strictoplasty 2004. Low blood pressure dx with impaired kidney function 2006, fludrocortisone pres. flare up 2010, steroids, Humira, codeine.