Calcitriol, the active form of vitamin D is made in the kidneys and maintains normal levels of blood calcium and phosphorus. Too much or too little calcitriol can cause serious side effects such as bone pain and visual disturbances. Elevated levels calcitriol also increase the intestinal absorption of calcium and phosphorus. If you have too much calcitriol in your system, you will have an excessive amount of vitamin D so adjust your diet accordingly
Check food labels to ensure that the food you eat is not fortified with vitamin D. Nearly all milk supply in the US is fortified with vitamin D, so find a mark that is not. Products made from milk such as ice cream and cheese are generally not fortified. Cereal may contain added vitamin D, which can orange juice, yogurt and margarine.
Avoid eating fish, meat, liver and liver products such as head, which is high in vitamin D. Salmon, mackerel, tuna, sardines and beef contain the highest levels.
Do not eat the yolk because it contains vitamin D. Make an omelette with just egg whites instead.
Tips and Warnings
Excessive intake of vitamin D will lead to high levels of calcium in the blood, so limit your intake of foods that contain calcium, such as broccoli, almonds and milk products.
Limit your intake of phosphate reduce the amount of milk, cheese, organ meats and eggs. Eight grams of milk is allowed per day, along with 1 ounce of cheese and one egg a day, but not more than three or four a week. Do not eat offal more than once every two weeks. High levels of vitamin D will lead to large amounts of phosphorus and calcium in soft tissues.
Neither your diet or excessive sun exposure can lead to an overdose of vitamin D. Overdoses of vitamin D is associated with the use of supplements.
Talk with nutritionist or doctor before changing your diet.