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Phosphorus



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Chapter 11 : Phosphorus



Phosphorus arrow_upward


  • Phosphorus is normally found in the body mostly as phosphate.
  • Phosphate ions are critical for normal bone mineralization, and phosphate plays a vital role in a number of other biological processes such as signal transduction, nucleotide metabolism, and enzyme regulation.
  • Phosphorus plays an important role in the transfer of energy to the key energy-storing molecules ATP and ADP.

  • Functions of Phosphorus arrow_upward


  • An essential component of bones and teeth
  • Needed to enable communication between cells
  • Required to activate B-complex vitamins
  • Essential part of cell membranes
  • Required for all major biochemical pathways in the body, such as energy production, cell division and ALL others
  • Contributes to the function of many enzymes

  • Sources of Phosphorus arrow_upward


  • The following foods are good sources of phosphorus:
    • Meat
    • Fish
    • Wholegrain
    • Cheese
    • Soy products
    • Nuts

    Daily Dose of Phosphorus arrow_upward


  • Infant’s birth to 3 years of age: 300-800 mg.
  • Children 4 to 6 years of age: 800 mg.
  • Children 7 to 10 years of age: 800 mg.
  • Adolescent and adult males: 800-1200 mg.
  • Adolescent and adult females: 800-1200 mg.
  • Pregnant women: 1200 mg.
  • Breast-feeding women: 1200 mg.

  • Deficiency Symptoms of Phosphorus arrow_upward


  • Poor memory
  • Brittle hair and nails
  • Poor bone growth
  • Osteoporosis
  • Increase in skin sensitivity.
  • Weight loss due to anorexia
  • Rickets
  • Stunted growth
  • Decreased libido

  • Excessive Intake and Toxicity Symptoms arrow_upward


  • For those who eat a typical American type diet, phosphorus toxicity could happen very easily.
  • Diets high in meat, fast foods, and soft drinks could be supplying your body with over-abundance of phosphorus.
  • The effects of this type of diet could result in hampered calcium absorption; influence your metabolism, and also the utilization of calcium.
  • Loose teeth, osteoporosis/arthritis, secondary hyperparathyroidism, tooth loss, and weight loss could also be symptoms of phosphorus toxicity.


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