Vitamin D has a couple of different benefits. Let's go over some of the benefits. We've talked about the natural antibiotic that's being produced by vitamin D, which is called cathelicidin, a kind of antibacterial enzyme. It is super helpful at being able to knock down bacteria. It also has antiviral mechanisms, as well as antimicrobial peptides and antiviral mechanisms.
Part of that is it stimulates and it can modulate the Th1 immune response in the Th1 immune system where you're making a lot of your natural killer cells and your helper cells. Good helper cells can also help your antigen-presenting cell and it can help make antibodies more efficiently. So, you're also going to have a better Th2 immune response. You're going to make antibodies to whatever that infection is. Those tend to come a little bit later in the game, but good signaling to make your antibodies is super helpful as well.
There is a couple of other studies here that are talking about different things. We have a reduction in our MMP-9 concentrations. We have a reduction in bradykinin storms and reduction in our cytokine storm. So, basically we have a lot of inflammatory molecules that get produced such as bradykinin, cytokines, interleukins MMP-9. These are inflammatory types of chemical messengers. Vitamin D can help modulate that and prevent that from being overproduced. The more we overproduce those, the more our immune system responds. So, we can create more cytokine storm issues because our immune system will be on this positive feedback loop, responding and creating more issues with the cytokines. When there are less cytokines, there's less chance of a cytokine storm, which is basically our immune system responding.
Imagine a fight between two people where one person yells out first and the other person yells back. Then they're pushing, shoving, and hitting and the violence escalates. That's what happens with the cytokine storm with your immune system and all the different cytokines and immune chemical signal. So, we can keep that modulated a bit which is very helpful. Vitamin D plays a really important role in that.
Get vitamin D supplementation from Thanksgiving to spring. At least, make that investment. If you want to come off the rest of the year, as long as you're getting some sunlight, it's fine. At least do that vitamin D supplementation to give you a good bump and the fat-soluble nutrients you'll get over those four or five months will hang around months afterward because it takes a while for that vitamin D level to build up.