Hi...., your vitamin D3 levels looks to be normal.... Foods that are richest source of vitamin D include: Fatty fish, like tuna, mackerel, and salmon....Foods fortified with vitamin D, like some dairy products, orange juice, soy milk, and cereals...Beef liver....Cheese, .Egg yolks...mushrooms, soy milk... Vitamin D is also naturally made by our body when we expose our skin to the sun.... Deficiency of vitamin D3 results in lethargy, weakness and rickets....