A blood test would show if you are low in Vitamin D.
milk
No. It, in fact, is the opposite. Vitamin D is absorbed in the intestine, converted by UV radiation in the skin, and then helps absorb Calcium into the body. Vitamin D deficiency can be caused by a few things, a diet low in Vitamin D, low sun exposure, or it could be caused by a tumor in the parathyroid gland (but if you have low Calcium, that is not possible).
Rickets
No, it can not.
Orange juice fortified with vitamin D and milk fortified with vitamin D.
The common symptoms of low vitamin D is sythnetisis to the sun light, having no energy, having pale skin and not being able to concentrate on anything.
No, it is low in vitamin K
The skin produces vitamin D when exposed to sunlight. Vitamin D levels are monitored by the thyroid gland, which produces a hormone when levels are low, causing the skin to produce vit. D.
The normal weekly dose for someone with low Vitamin D levels is 50,000 units once or twice a week. You need to be sure your levels really are low before you take that much however. Your doctor will tell you how much Vitamin D is safe to take.
A sweaty head is a classic signal of low Vitamin D3, the form of D the body makes from sunlight. Bone pain and muscle weakness can signal low Vitamin D levels, too. Over time, severely low D levels can cause an illness in children called rickets. In adults low D contributes to osteoporosis and the jawbone loss that accompanies periodontal disease. They're finding that Vitamin D plays many roles. Healthy D3 levels better mental outlook, improve physical energy, and fight cancer.
Vitamin D is produced by ultraviolet radiation on your skin. The UV light converts a precursor molecule to vitamin D.