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CCS recommendation on Vitamin D supplementation


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Canadian Cancer Society (CCS) recommends supplementation of Vitamin D 1000 I.U. ( international units) during fall & winter season. 

Breast fed babies should get 400 I.U/ day. 

People at higher risk of having low Vitamin D levels include those who are older, have dark skin, do not go outside often & wear clothing that cover most of their skin. They should take supplement all year round. 


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  • 3 years later...
On 10/5/2018 at 5:41 PM, dalsingh101 said:


I think more serious research should be conducted on these things, but there are a lot of agendas that seem to stifle this. 

Which agendas ?

This is what NICE say in the UK:


Vitamin D deficiency in adults: Summary

  • Vitamin D is a fat-soluble vitamin that regulates calcium and phosphate homeostasis and is therefore vital for musculoskeletal health.
  • Vitamin D circulates in the blood as both vitamin D(colecalciferol) and vitamin D2 (ergocalciferol).
    • In the UK, 80–90% of vitamin D is derived from skin exposure to ultraviolet B radiation from sunlight, with the remaining 10–20% being derived from dietary sources.
  • Recommended vitamin D thresholds in the UK in respect to bone health are:
    • An increased risk of vitamin D deficiency occurs at serum 25-hydroxyvitamin D (25[OH]D) levels less than 25 nmol/L.
    • Vitamin D levels may be inadequate (or insufficient) in some people when serum 25(OH)D is 25–50 nmol/L.
    • Vitamin D levels are sufficient for most people when serum 25(OH)D is greater than 50 nmol/L.
  • Risk factors for vitamin D deficiency include people:
    • Aged 65 years and over.
    • Who have low or no exposure to the sun, for example those who cover their skin; who are housebound or confined indoors for long periods.
    • Who have darker skin pigmentation.
    • With a malabsorption disorder, or following weight loss surgery.
    • With severe liver or end-stage chronic kidney disease.
    • Taking certain drugs.
    • Who are pregnant or breastfeeding.
    • With obesity.
  • Complications of vitamin D deficiency include increased risk of:
    • Osteomalacia — may present with lower back pain, bone pain in the shoulder, ribs, pelvis, or legs; muscle pain and weakness; waddling gait; and impaired physical function.
    • Osteoporosis.
    • Falls and fragility fracture.


  • Assessment for vitamin D deficiency (by checking serum 25[OH]D levels) should be arranged if a person has:
    • Musculoskeletal symptoms that may be attributable to vitamin D deficiency.
    • Suspected bone disease such as osteomalacia or osteoporosis that may be improved with vitamin D treatment.
    • Known bone disease such as osteoporosis or Paget's disease, where correction of vitamin D deficiency is needed prior to specific treatment.
  • Management of a person with vitamin D deficiency includes:
    • Seeking specialist advice or arranging referral if the person has a condition predisposing to hypercalcaemia; a malabsorption disorder; renal stone disease; severe kidney or liver disease; or is pregnant.


    • Providing advice on sources of information and support.
    • Advising on safe sunlight exposure and dietary sources of vitamin D.
    • Prescribing a fixed loading dose followed by maintenance vitamin D therapy for people needing rapid treatment.
    • Prescribing maintenance dose vitamin D therapy for people needing less urgent treatment.
    • Assessing dietary calcium intake and the need for supplementation.
    • Arranging follow up to reassess serum calcium and vitamin D levels (if clinically indicated).
  • Advice for the prevention of vitamin D deficiency should include:
    • Information on safe sunlight exposure and dietary sources of vitamin D.
    • Adults with risk factors should take a daily supplement containing 400 international units (IU) of vitamin D throughout the year.
    • Other adults should consider taking a daily supplement containing 400 IU of vitamin D, particularly in the autumn and winter.
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14 minutes ago, Premi said:

Which agendas ?

This is what NICE say in the UK:

Thankfully the covid thing has brought vit D into focus. I feel it has been relatively poorly studied myself, like our endocannabinoid system. Might be that as it's brown or black people who can suffer the most from deficiencies - certain people thought it wasn't that important.  

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