Yeah . Nice add. I believe I already was exposed to differents diseases. I grew up in a third world country. Also, I did a exchange program in a multicultural US University where I had contact with different people from around the world.

I will try to expose more to sunlight , arms and legs. I spend all my day indoor.

I will add on to this that you can get enough vitamin D via diet, whereas exposure to sunlight is one of the primary contributors to aging.