Home›Journal
The Journal
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...
Read more
DeficiencyHow long does it take to fix vitamin D deficiency?
If your test came back low, how long until you're back in the healthy range? The honest answer is 8–12 weeks for most people — but...
Read more
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...
Read moreStop guessing.Start knowing.
The whole process takes less time than booking a GP appointment — and tells you more about your vitamin D than a standard blood test.