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.
Severe vitamin D deficiency with levels below 10 ng/ml (25 nmol/L) causes severe fatigue and personality changes, depression-like symptoms, chronic sleep disorder, multiple intolerances, obvious immune dysfunctions and in the long time, multi-system symptoms and multi-system diseases (1,2). Vitamin D deficiency results in chronic fatigue and multi-system symptoms Author: Dr. med. Anna Dorothea Hoeck, MD, Mariawaldstr. 7, 50935 Cologne, Germany. E-Mail: ad.hoeck@t-online.de No potential conflicts of interest exist in this paper.