I've used the Sperti vitamin D lamp for 5 mins daily for a year (alternating torso and back exposure). I stopped taking vit D supplement to see what level I would reach with only the lamp. I tested only at 39 What am I missing?
Thanks Doc for this info. I too have a Sperti. I often read about NIR and sunlight but not too much about getting the crucial UV rays. Look forward to learning more.
I've used the Sperti vitamin D lamp for 5 mins daily for a year (alternating torso and back exposure). I stopped taking vit D supplement to see what level I would reach with only the lamp. I tested only at 39 What am I missing?
Thanks Doc for this info. I too have a Sperti. I often read about NIR and sunlight but not too much about getting the crucial UV rays. Look forward to learning more.