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 Signs and Symptoms. Fatigue is a common sign of vitamin D deficiency. You may feel like you have no energy. Muscle pain and aches, muscle cramps and weakness are other commonly reported symptoms associated with low vitamin D levels in the body. Not everyone who has vitamin D deficiency has symptoms.