This article [“Rediscovering the Healing Power of the Great Outdoors” by Conan Milner], like most of those in your “Mind and Body” section, was heavy on emotion and enthusiasm and light on data. Here is an important piece of data that readers of the article probably are asking themselves and it doesn’t provide: What is the requirement for sunshine time outdoors to get the needed amount of vitamin D? An authoritative source I consulted says that it generally is 5 to 15 minutes of sunshine, two to three times per week, on the face and hands. Your readers might be pleased to know that casual sun exposure of a short duration would be extremely beneficial. Regards, Margaret Corasick California