Living in a sterile environment and not getting enough natural sunlight exposure is part of the problem for too.
We need the correct mix of gut flora or microbiome in our bodies.
We need to eat more dirt! It's funny but I'm not kidding.
We also have to stop slathering our skin in sunscreen, so that our skin can produce vitamin D.
(I own a skincare company and I stopped making sunscreen about 6 years ago and using it because it is toxic. What does that tell you?)