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.
Other conditions that might have Vitamin D deficiency as a complication may, potentially, be an underlying cause of Vitamin D deficiency. Our database lists the following as having Vitamin D deficiency as a complication of that condition: 1  Fanconi's syndrome.  Kidney conditions.