What are the causes of disease?

From a Chinese medicine perspective, there are three causes of disease

First, we have the internal causes of disease which refers to the emotions.

Second, we have the external causes of disease which refers to climactic factors such as weather. You may think this was much more relevant thousands of years ago when prolonged exposure to the external elements like cold, damp, wind, heat, were huge contributors to disease.

Third, is what we call miscellaneous causes of disease which refers to toxins like parasites or heavy metal exposure. This category also includes things like diet.