I'm no medical expert or anything, but I take 50,000 IU Vitamin D once per week (I'm very Vitamin D deficient) and I sometimes sweat at night, but usually it is because of environmental factors like too many covers or too much heat in the room.

Like others have suggested, maybe try testing out the variables separately. Well, that *might* work. You probably don't have the sweats every night, so it might not. I tend to think that maybe when you are camping you are getting more fresh, cool air, so you don't sweat. Do you sleep with your window open or closed? Do you have A/C? Your boyfriend's body heat might be a significant factor. Also, maybe you have too many covers...as the night progresses you get hotter??? Maybe it is a combo of things?

Anyway, I just wanted to say that I'm also taking Vitamin D and not having night sweats, but I'm sure your body is different.

I'm sorry you are having night sweats. Good luck!

I know the professional med peeps already weighed in, but I'll pitch in my two cents. I sometimes have night sweats that are related to my menstrual cycle, both when I ovulate and just before my period, and I don't have them when I'm away from home either. My theory is that it's because I don't sleep as deeply.

You mentioned your bed - any chance of a latex allergy? Aren't mattresses full of latex?

Night sweats that only occur at home would certainly seem to implicate something about the sleeping environment at your apartment or some other situational variable that changes when you're traveling. Personally, I've never seen vitamin D cause night sweats, but that doesn't mean it isn't possible. You might try going off of it for a week while you're at home to test this hypothesis. Similarly, it would be interesting to know if you get the sweats when your boyfriend isn't in bed with you.

Other possible causes of situational night sweats include anxiety (perhaps you're less stressed when traveling?), hormonal imbalances (more common in menopausal women), and stimulant use.

And not to be too alarmist, but I would be remiss to not mention that night sweats can be a harbinger of some pretty serious health issues as well including chronic infections (TB, HIV, etc), hyperactive thyroid, and cancers. Generally night sweats from these problems wouldn't change when you sleep in a different place, but it still would be a good idea to get checked out just to be sure.

I have not heard of this effect with my patients. My review of the medical research literatre also does not indicate that this is a side effect of vitamin D. Likely there is another cause.