Is natural acquired immunity valid?

Do you think natural acquired immunity is a valid way to stay safe and healthy?

At the writing of this blog post, I am currently 64 years old and I feel very healthy. I don’t have any broken bones, I don’t get headaches, I eat moderately, exercise moderately, have a good mindset and I am healthy and well.

It seems to me, if you inject yourself with various toxic chemicals and concoctions your body is going to get confused and you will end up weaker and getting sick.

It’s every individual choice.