Should we take a megadose of vitamin D after sunburn?

Quick boost #3 - A curious idea to examine on the summer solstice.

You are on a sandy beach in mid-June. The skies are cloudy. You know it’s pretty close to the summer solstice, but the sun’s rays do not feel particularly intense. You’re learning how to make a really good sandcastle. Towards the end of the afternoon you look down at your sandy palace with pride, and the fierce dragon that encircles it. You can imag…