We've seen evidence that vitamin D deficiency is associated with sleep problems, particularly with daytime sleepiness. A new study examined the link between daytime sleepiness and vitamin D, and also considered one of the major risk factors of vitamin D deficiency: skin pigmentation.
I'm going to diagnose myself as a sufferer of early onset seasonal affective disorder. Early onset as in early in the day. Several times this week I've had to stop myself from climbing into my pajamas at 7 p.m.
When it comes to the latest controversy about the new Vitamin D report, the numbers just don't seem to add up. How else can you explain it when media outlets covering the same scientific report come up with opposing advice?
We simply do not have large-scale, long-term intervention trials with all the bells and whistles- randomization, double-blinding, placebo-control to tell us what dose of calcium or vitamin D is truly optimal for health.
For years we've had it beat into our heads that because sunlight causes skin cancer, we should avoid the sun and, when in it, use sunscreen. Now we're getting more nuanced advice because of concerns about vitamin D deficiency.