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.
Symptoms of Vitamin D Deficiency. Vitamin D isnât an optional nutrient, our bodies need it, and without it, problems can arise. Many people go through life with nagging aches and pains, allergies, malaise, and a general lack of vitality. Such nonspecific symptoms can be the result of one, or several factors, and vitamin D deficiency is one of them. Specific symptoms related to vitamin D deficiency include:  Muscle weakness. Joint aches and discomfort. High blood pressure. Inability to concentrate or focus. Urinary incontinence, bladder issues. Constipation. Headaches.