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Zinc



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Chapter 13 : Zinc



Zinc arrow_upward


  • Zinc is a constituent of many enzymes and is essential for their proper functioning.
  • Zinc is essential for the metabolism and structural stability of nucleic acids.

  • Functions of Zinc arrow_upward


  • Accelerates the activity of approximately 100 different body enzymes
  • Promotes immune function to fight illness
  • Supports healthy cell growth and development
  • Ensures proper sense of taste and smell

  • Sources of Zinc arrow_upward


  • Zinc is found in:
    • Meat
    • Seafood
    • Eggs
    • Milk
    • Whole-grain products

    Daily Dose of Zinc arrow_upward



    Group

    Age

    Dose/day

    Infants

    0-6 months

    2 mg

    7-12 months

    3 mg

    Children

    1-3 years

    3 mg

    4-8 years

    5 mg

    9-13 years

    8 mg

    14-18 years

    Boys: 11 mg

    14-18 years

    Girls: 9 mg

    Adults

    19 years and older

    Girls: 8 mg

    19 years and older

    Boys: 11 mg



    Deficiency Symptoms of Zinc arrow_upward


  • Zinc deficiency has a number of symptoms such as:
    • Slowed growth in children
    • Slow wound healing
    • Frequent infections
    • Skin irritation
    • Hair loss
    • Loss of sense of taste

    Excessive Intake and Toxicity Symptoms arrow_upward


  • Acute zinc toxicity:
    • Symptoms of acute zinc toxicity include:
    • Nausea
    • Vomiting
    • Loss of appetite
    • Abdominal cramps
    • Diarrhea
    • Headaches
  • Chronic zinc toxicity:
    • Chronic effects of zinc toxicity include:
    • Low copper status
    • Altered iron function
    • Reduced immune function
    • Reduced levels of high-density lipoproteins
    • It has been suggested that chronic intake of high levels of zinc alters some aspects of urinary physiology.


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