Disagree again.
Here is how I read your article:
1) Supplements don't boost your immune system
2) Vit D and Zinc boost your immune system
3) You havent checked to see if there are other supplments that work.
4) You are happy to report there are products on the market that don't work.
You even mention some of this:
There is widespread Vitamin D deficiency. If the answer is "simply go out into the sun" then there wouldn't be this deficiency becuase something is happening systemically in our culture that prevents that on a widespread level. Thus, from the current state of deficiency, taking vitamin D, by your own admission, does in fact boost immunity. Same goes for zinc.
I find this article simply blind to the realities of how people finding themselves living, then discounting ways they can improve that situation.
Much like you wrote a whole article about Vitamin D and COVID and left out Vit D's role in stopping Bradykinin Storms, here you leave out one of the the goals of immunological supplementation, improving cytokine presence and release.
https://www.frontiersin.org/articles/10.3389/fimmu.2014.00491/full
However, this is dangerous for some diseases like COVID due to the danger of cytokine storms. Guess what? There is other supplementation to help prevent that..
https://www.frontiersin.org/articles/10.3389/fimmu.2020.570122/full
Finally there are sources of food, not consumed by every culture that could also help with immune or specific disease. For example, fucoidans from brown seaweed... Which would explain the lower response in cultures that eat more seaweed than others
https://www.sciencedaily.com/releases/2020/07/200724104228.htm
Your writing would best be served by pointing out there is a lot of junk on the market (same can be said for products released by food companies, pharma companies, tool companies, car companies, etc)... and then spending, maybe just a little time, evaluating if your title has any truth to it at all.
BTW, I also used to believe that "boosting" immune systems was bullshit.
