Exactly HOW do negative emotions cause illness?

I live in a house where there is a lot of negativity in the air. Anxiety, anger, depression. I have a spiritual practice which keeps me to some extent free of these, but certainly not entirely. I am working on moving away but because of my financial limitations that may take a few months.

In the meantime, I am keen to understand how negative emotions cause chronic illness. I have sciatic pain and a few other conditions.

Is it negative emotions which cause toxemia which leads to illness? Or is it the SUPPRESSION of negative emotions that causes illness?

In other words, if one is spiritually very advanced, and can feel the fear around him and not push it away, as an ordinary person would instinctively do, would he still get sick living in an atmosphere of fear?

One could also say that a spiritually advanced person may not identify with the fear personally, and that may make all the difference. What do you think?

I have read that negative emotions make the body acidic, which lies at the heart of several chronic illnesses. But I could not get something very detailed and convincing on this.

Finally, what does someone do if they cannot help staying in a negative situation? How can they preserve and improve their health?

Any thoughts or information would be appreciated. Tweet