On holiday recently I came across quite a number of families wearing muslim dress (hijab) and quite a number of them had grandma in tow. But what struck me was the poor physical state of the old ladies. Most had problems walking.
So while I was doing my best to get a Vitamin D fix they were all covered up. The younger ones wearing full head to ankle swim suits only faces, hands and feet showing. How do they prevent Vit D deficiency?