Many thanks. For myself, I'm not too concerned about trying larger doses, after research, but for my kids, I'm more cautious. It would be good if there was some concrete data.
My problem is that we like in the north west of England, which is more often than not grey and rainy. In summer there can be enough sun to get the kids into, minus sunscreen, but in autumn, winter and spring it is at a premium. We have MS in our family, which is why I want to make sure my kids get enough vit D (between ages 6 and 15, the more vitimin D kids get, the less their likelihood of developing MS in later life.
I would prefer the natural route, but, again, living where we do, it's difficult.
Anyone know definitively whether it is sunlight or just daylight that sythesises vitamin D?