Discount brokerages require a minimum age of 18. However, you can create a sub-account under your dads name (as long as he signs some sort of consent form) and these sub-accounts don't have a minimum age requirement.
Vitamin D deficiency rickets can be caused by a lack of vitamin D in the diet, a lack of exposure to the sun, or malabsorption syndromes in which there is an inability of the intestines to adequately absorb nutrients from foods.
About complications: Complications of Vitamin D deficiency are secondary conditions, symptoms, or other disorders that are caused by Vitamin D deficiency. In many cases the distinction between symptoms of Vitamin D deficiency and complications of Vitamin D deficiency is unclear or arbitrary. Next. Search Specialists by State and City.