Vitamin D (Functions, RDA, Deficiency and health issues.

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Vitamin-DFunctions, RDA, Deficiency and Health
Issues
By IC Fitness Club - An Institute of Fitness
Science
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www.icfitnessclub.com
CONTENTS
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Functions of Vitamin D
RDA of Vitamin D
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Deficiency of Vitamin D Health Issues
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Vitamin D (Introduction Function)
www.icfitnessclub.com

• Vitamin D is a fat-soluble vitamin that plays a
  crucial role in several vital functions within
  the human body. There are two primary forms of
  vitamin D vitamin D2 (ergocalciferol) and
  vitamin D3 (cholecalciferol). Vitamin D3 is
  synthesized in the skin when exposed to
  ultraviolet B (UVB) radiation from sunlight,
  while vitamin D2 is obtained from certain
  plant-based foods or supplements.

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FUNCTIONS OF VITAMIN D

• Calcium and Phosphorus Absorption One of the
  main functions of vitamin D is to enhance the
  absorption of calcium and phosphorus from the
  intestine. This process is essential for
  maintaining proper bone health and
  mineralization, preventing conditions like
  rickets in children and osteomalacia in adults.
• Bone Health Vitamin D helps regulate the levels
  of calcium in the blood by promoting its
  absorption from the gut and reabsorption from the
  kidneys. It also facilitates the deposition of
  calcium in bones, making them stronger and less
  prone to fractures.
• Cardiovascular Health Emerging research
  indicates that vitamin D may have a positive
  impact on cardiovascular health by helping to
  regulate blood pressure, reduce inflammation, and
  improve overall heart function.

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• ....CONTINUED
• Immune System Support Vitamin D is involved in
  the modulation of the immune system, helping it
  to function efficiently and respond appropriately
  to infections and diseases. It has been
  associated with a reduced risk of autoimmune
  diseases and may also play a role in reducing
  inflammation.
• Muscle Function Some research suggests that
  vitamin D is important for maintaining muscle
  strength and function, which can be particularly
  significant in preventing falls and improving
  physical performance, especially in older adults.

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RDA(recommended Dietary Allowance) OF VITAMIN D

• The Recommended Dietary Allowance for adults 19
  years and older is 600 IU (15 mcg) daily for men
  and women, and for adults gt70 years it is 800 IU
  (20 mcg) daily.

• Sources of Vitamin D
• Sunlight The most natural and significant source
  of vitamin D is sunlight. When your skin is
  exposed to UVB rays from the sun, it synthesizes
  vitamin D3. The amount of vitamin D produced
  depends on factors such as skin pigmentation,
  geographic location, time of day, and season.
• Foods Some foods contain vitamin D, but it is
  not present in a wide variety of foods naturally.
  Fatty fish (salmon, mackerel, tuna), fish liver
  oils, beef liver, egg yolks, and fortified foods
  like milk, orange juice, and cereals are some
  dietary sources of vitamin D.
• Supplements Vitamin D supplements are available
  in various forms, including vitamin D2 and D3,
  and are commonly used to ensure adequate intake,
  especially in individuals who may have limited
  sun exposure or dietary sources.

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Deficiency of Vitamin-D Health Issues

• Osteoporosis and Osteomalacia Weak bones and
  fractures.
• Rickets Soft and weak bones in children.
• Muscle Weakness and Pain Weak muscles and
  increased risk of falls.
• Immune System Impairment Increased
  susceptibility to infections.
• Cardiovascular Problems Higher risk of heart
  diseases.
• Mood Disorders Increased risk of depression and
  anxiety.
• Autoimmune Diseases Linked to conditions like
  multiple sclerosis and rheumatoid arthritis.

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Thank you

• by
• IC Fitness Club - An Institute of Fitness Science

www.icfitnessclub.com