Vitamin D activates immune T-cells

Vitamin D activates immune T-cells

Vitamin D plays a major role in keeping the body healthy by allowing the immune system's T-cells to start doing their jobs.  T-cells are the ‘attack’ cells in the Innate part of the immune system – the part you were born with. And T-cells have receptors for vitamin D, that’s why people talk of vitamin D acting ‘like a hormone’.

A team of researchers from the Department of Immunology and Microbiology at the University of Copenhagen found that without enough vitamin D in the body, the T-cells were not ‘activated’ from their naïve form (1).

Former Oxford University Biochemist Chris Woollams added, “As we’ve been telling you, without enough vitamin D, the whole immune system fails, no matter how much exercise you do, how well you ate, whether you took supplements like vitamin C or Echinacea. It all counts for nothing, without adequate vitamin D”.

Geisler explained further, saying that when a T-cell is exposed to a pathogen, like a cancer cell or Covid, it extends an 'antenna' searching for a vitamin D molecule. If it can’t find one, the T-cells won’t even begin to mobilise against the invader. When a pathogen attacks, activated T-cells are capable of ‘explosive proliferation’.

Chris Woollams added, “Scientific American, who interviewed Geisler, reported that a 2009 study in the Archives of Internal Medicine found that 77% of adult and teenagers tested did not even have the minimum ‘healthy level’ of 30 ng/ml (=75 nmol/L) and only 3% of blacks were getting enough daily intake.

Target vitamin D levels in the body are 100-150 nmol/L for health. Daily dose is 125 mcg if you have cancer, 50 mcg if you don’t according to the Endocrine Society and Professor Michael Holick of Boston Medical School. Vitamin D receptors have also been found on your B-cells, the part of your immune system that makes antibodies, your long term defence system (2).

I even hear Dr. Fauci, who is 80, takes 6,000 IUs (150 mcg) a day of vitamin D supplement. He said it on Instagram a few years ago.

Go to: Vitamin D? Shout 1_2_5



  1. Scientific American
  2. Vitamin D and the immune systemCinthia Arrow, J Investigative Medicine, 2011


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