Have lupus and have to avoid the sun due to photosensitivity. My vitamin D level was 21. Is that low enough to cause any noticable symptoms?

You are just 39. You will develop osteoporosis as you age. You need to see your doctor and get on vit d and calcium to get that level up and protect your bones. You also need a healthy diet and exercise.daily. .
Can worsen lupus &: There are many symptoms of low D including depression, fatigue and pain, which some will have at your level and some won't, but low D is associated with aggravation of SLE! Take 5-8000 iu of D3/day to get your levels in the 50-8o range. See http://doctormurray.com/vitamin-d3-is-important-in-autoimmune-disorders/ and http://tinyurl.com/zstm5u3 and http://tinyurl.com/2chkcer.

Related Questions

Can a vitamin D level of 21 cause depression? My doctor suspects I'm depressed. I say I'm just exhausted. I can't be in the sun because of lupus.

It's possible. Low vitamin D levels are common, but even if you cannot have sun exposure, it is easy to supplement Vitamin D. Talk to your doctor, but usually taking a high dose Vitamin D3 (2000 IU) twice a day should be adequate to see if it helps. Some doctors recommend much higher doses (50,000 IU or even more) but I would start low and see how you do. Read more...
Yes; easy to take D3. Low D can cause depression and fatigue and is associated with aggravation of SLE! Take 5-8000 iu of D3/day to get your levels in the 50-80 range. See http://doctormurray.com/vitamin-d3-is-important-in-autoimmune-disorders/ and http://tinyurl.com/zstm5u3 and http://tinyurl.com/2chkcer Many with lupus may have undiagnosed Lyme disease. See http://tinyurl.com/m2eld3v and http://tinyurl.com/zsx7eaq. Read more...