20 Mar

Vitamin D deficiency is an important health issue
This June 20, 2014, marks National Vitamin D Awareness Day – taking place on the eve of the shortest day of the year when daylight is most limited.

This important health initiative is on again in 2014 and aims to highlight the number of Vitamin D deficiencies in Australia, its impact on our health and wellbeing, as well as workplace productivity. On this day all workers are encouraged to step outside for a daily dose of sun and Vitamin D. Whether it’s a staff BBQ, outdoor meeting or team building session – by taking a ‘D-Break’ you’ll be helping to raise awareness of the importance of Vitamin D and bone health, as well as fostering a happier and healthier workplace.

For more information on the corporate wellness initiative call 07) 3119 2497.


The following is from this website:

Sunlight and Vitamin D Synthesis

What type of sunlight provides the best vitamin D?

Exposure to the sun’s ultraviolet (UV) rays is required for vitamin D3 (cholecalciferol) to be produced. Vitamin D3 is synthesized in the skin once your unprotected skin receives exposure to sunlights UV rays.

The sun emits three different types of radiation, UVA, UVB and UVC. The ozone layer is good at blocking all of the UVC radiation and most of the UVB, however, none of the UVA radiation. The UVA penetrates deep into the skin and can cause aging and wrinkles. UVB can cause sunburn and acceleration of skin aging.1 UVB radiation from the sun is also the best source of vitamin D.

The sun’s UVB rays vary tremendously and is dependant on several factors including time of day and geographical location. Below are general regarding safe sun exposure times from Osteoporosis Australia.3

Sun Exposure To Achieve Sufficient Vitamin D For People With Moderately Fair Skin^ Type II

Region Summer (Dec – Jan)
At 10am or 2pm*
Winter (July – Aug)
At 10am or 2pm*
Northern Australia
Cairns 6-7 minutes 9-12 minutes
Townsville 5-7 minutes 9-13 minutes
Central Australia
Brisbane 6-7 minutes 15-19 minutes
Perth 5-6 minutes 20-28 minutes
Southern Australia
Sydney 6-8 minutes 26-28 minutes
Adelaide 5-7 minutes 25-38 minutes
Melbourne 6-8 minutes 32-52 minutes
Hobart 7-9 minutes 40-47 minutes
*11am or 3pm daylight saving time, respectively. Skin claissification by Fitzpatrick. Adapted from Osteoporosis Australia. Calcium, Vitamin D and Osteoporosis – A guide for consumers. 4th Edition. 2010
^Sun exposure times resulting in 1/3 minimal erythemal dose. Exposure times for people with highly pigmented skin would be 3-4 times greater.

For specific up-to-date information relating to your location, The Australian Bureau of Meteorology issues a UV Index forecast every day to help people to avoid overexposure to high levels of UV radiation.4 UV index range is expressed as a numeric value from 0 to 20. Numbers 3 or above are considered unsafe for sun exposure without protection.2

Risk Value
Low 0-2
Moderate 3-5
High 6-7
Very High 8-10
Extreme 11+
Table 1. UV Index 3

How does the light get converted to vitamin D in the skin?

When ultraviolet rays from sunlight penetrate the skin, they react with 7-dehydrocholesterol which is a precursor to cholesterol. This reaction forms vitamin D3 (cholecalciferol) in the skin. It is then quickly converted by the liver to the prehormone 25(OH)D and then further converted in the kidneys to the hormone 1,25(OH)D2 which is the active form of vitamin D.5

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2 Responses to “IN AUSTRALIA”

  1. auntyuta March 20, 2014 at 6:29 am #

    I had a look at this product and would like to try it:

    New 6 in 1 formulation for strong bones
    Ostelin Osteoguard is a high potency Vitamin D & calcium supplement scientifically formulated to help maintain bone mineral density, supporting your bones in the prevention and treatment of Osteoporosis. Ostelin Osteoguard is fortified with Vitamin K and magnesium for the maintenance of strong healthy bones, boron to aid calcium metabolism, and manganese to help maintain healthy bones and joints.
    Why Osteoguard?
    As we get older strong healthy bones and muscles are vital in reducing the incidence of falls and fractures. In Australia, 1 in 2 women and 1 in 3 men over the age of 60 will have a fracture due to Osteoporosis1.
    What is Osteoporosis
    Osteoporosis is a condition where bones become fragile and brittle, and can fracture more easily than healthy bone.
    Benefits of Ostelin Osteoguard
    Ostelin Osteoguard is a high potency complex, specially formulated with 6 levels of support for strong bones:
    Vitamin D promotes calcium absorption and increases bone density and is essential throughout life to help maintain healthy bone structure. Vitamin D aids in reducing bone loss in older people as Vitamin D status is affected by the aging process.
    Calcium assists in maintaining peak bone mass and increasing bone mineral density. After menopause women’s requirements for calcium increase.
    Vitamin K works synergistically with vitamin D for bone health and helps the body transport calcium. Vitamin K is a co-factor for osteocalcin, a protein which influences bone mineral density.2 Both post menopausal women and the elderly have an additional requirement for vitamin K, which assists in the maintenance of bone mineral density by helping the body transport calcium.
    Magnesium is required by the body for normal bone function and bone metabolism and mineral density. The elderly may require additional magnesium which is important for maintaining normal blood calcium levels. Magnesium is also particularly important during and after menopause.
    Boron plays a role in Vitamin D, magnesium , phosphorous and calcium metabolism , and therefore a role in the maintenance of normal bone.
    Manganese is necessary for the development and maintenance of healthy bones and joints. Manganese may assist in bone function, and may help maintain bone density.
    2 tablets daily with food, or as directed by your healthcare professional.
    Each tablet contains
    Vitamin D3 500IU (as Cholecalciferol 12.5mcg)
    Calcium 600mg (as Calcium carbonate 1.5g)
    Magnesium 52.5mg (as Magnesium citrate nonahydrate 195.7mg and Magnesium oxide – heavy 51.5mg)
    Vitamin K1 100mcg (Phytomenadione)
    Boron 1.5mg (as Boric acid 8.6mg)
    Manganese 2mg (as Manganese sulfate monohydrate 6.2mg)
    Research has shown that 100-200mcg of vitamin K per day is unlikely to interfere with anticoagulant medication.3,4 However, if you are taking anticoagulant medication, discuss this with your healthcare professional.
    Always read the label. Use only as directed. Vitamin supplements should not replace a balanced diet. Ostelin is recommended for adults only.
    Other Information
    This product is Halal certified
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  2. rangewriter March 20, 2014 at 11:28 am #

    Wow. There’s a lot of information here! It’s ironic that such a necessary component for our health is also such a dangerous one. But I think that is true of many things. Too much of a good thing translates into a bad thing…just like with dairy products for example.

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