A category of enzymes produced mainly in the liver and bones, alkaline phosphatase enzymes are responsible for splitting off the acidic mineral phosphorus, creating an alkaline pH balance. According to Jeffrey E. Kaslow on Dr. Kaslow.com, high blood levels of alkaline phosphatase could be indicative of bone or liver disease. In the case of children or adolescents, high alkaline phosphatase levels may simply reflect rapid bone growth. If your blood test reveals elevated alkaline phosphatase levels, you will need to discuss potential underlying conditions with your doctor. Some foods may also lower alkaline phosphatase.
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According to Kaslow, a deficiency in vitamin D may be responsible for a high level of alkaline phosphatase. Rickets, a condition in children, is related to a vitamin D deficiency. For this reason, foods high in vitamin D may decrease your levels of alkaline phosphatase. According to World's Healthiest Foods, certain types of fish are high in concentrated vitamin D. These include salmon, sardine and shrimp.
Vitamin D milk, or 2 percent, is another very good source of vitamin D, reports World's Healthiest Foods. An 8-oz. glass of milk contains 24.4 percent of the daily value of vitamin D. In addition, the milk protein casein appears to have a lowering effect on alkaline phosphatase. A study published in "The Journal Of Nutrition" reports that dietary casein demonstrated an inverse relationship to alkaline phosphatase activity in rats. The study was conducted by M. Ross and W. Batt of the Biochemical Research Foundation in Newark, Delaware.
Increasing dietary copper intake may play a role in decreasing alkaline phosphatase levels. World's Healthiest Foods says insufficient intake of this mineral can lead to increased fecal free radical activity and fecal water alkaline phosphatase levels. These increases are considered a risk for colon cancer, reports World's Healthiest foods.
By increasing your copper consumption, you may be able to lower your alkaline phosphatase activity. World's Healthiest Foods notes that cashews are particularly rich in copper, with 1/4 of a cup delivering 38 percent of the daily value. Talk to your doctor about appropriate steps to take for balancing your alkaline phosphatase activity.