30/11/2025
Totally agree with this - to convert ng/mL to nmoL which is the measurement used in Ireland and UK you multiply by 2.5
So 60-80 ng/mL = 150- 200 nmoL
In my view ‘sufficient’ is not good enough . You want optimal levels . I personally aim to keep my level between 100 -150 nmoL
Testing is really important and there are affordable home testing kits that can be ordered online if vitamin D levels are not tested by your GP .
“The Vitamin D LIE your doctor still believes…”
If you struggle with:
• Constant colds & flu
• Winter depression
• Autoimmune flares
• Psoriasis, eczema, or joint pain
• Feeling tired no matter how much you sleep
…your level is probably “sufficient” (30+ ng/mL) but nowhere near OPTIMAL.
Real optimal = 60–80 ng/mL.
Below that, your immune system can’t regulate itself → more inflammation, more sickness, more misery.
I’ve watched psoriasis disappear, Hashimoto’s antibodies crash, and chronic depression lift in weeks… just by getting D3 + K2 into the right range.