Journal
Plain-English science on vitamin D, deficiency, testing methods, and what your number actually means.
australiaWhen to test vitamin D in Australia: A seasonal guide
The best time to test vitamin D in Australia depends on what you want to know. A guide to winter, summer and follow-up testing — and...
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AustraliaVitamin D in pregnancy: why your levels matter for two
Pregnancy is one of the highest-stakes windows for vitamin D status — your level determines your baby's level, and deficiency in either has measurable consequences. Here's...
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AustraliaVitamin D in winter: how to keep your levels up through the cold months
Australian winters are short and mild compared to the northern hemisphere — but vitamin D deficiency rates still double between May and September. Here's why your...
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AustraliaFoods high in vitamin D (and why food alone probably isn't enough)
Wild salmon, sardines, egg yolks, UV-exposed mushrooms — the natural food sources of vitamin D are short and oily. Here's the realistic contribution food can make...
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AustraliaHow much vitamin D do you actually need? An Australian guide
There's no single right answer to "how much vitamin D do I need" — it depends on your blood level, your age, your sun exposure, and...
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AustraliaWhy so many Australians are vitamin D deficient (even in summer)
Roughly 1 in 4 Australian adults has insufficient vitamin D. The reasons are part geography, part lifestyle, and part the very public health messaging that protects...
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The whole process takes less time than booking a GP appointment — and tells you more about your vitamin D than a standard blood test.