The effect of humors on diseases according to food:

• The hot wet temperament diseases occur whenever the foods in their temperaments are hotter and wetter than they should be, because if the stomach and liver of a blood humor predominant person receive foods which are in their temperament hotter and wetter than they should be, they will be transmuted into a blood humor which is hotter and wetter than it should be, which shall cause *the hot wet blood humor diseases type*.

• The cold wet temperament diseases occur whenever the foods in their temperaments are colder and wetter than they should be, because if the stomach and liver of a phlegmatic humor predominant person, receive foods which are in their temperament colder and wetter than they should be, they will be transmuted into a phlegmatic humor which is colder and wetter than it should be, which will cause *the cold wet phlegmatic humor diseases type*.

• The hot dry temperament diseases occur whenever the foods in their temperaments are hotter and drier than they should be, because if the stomach and liver of a yellow bile humor predominant person, receive foods which are in their temperaments hotter and drier than they should be, they will be transmuted into a yellow bile humor which is hotter and drier than it should be, which will cause *the hot dry yellow bile humor diseases type*.

• The cold dry temperament diseases occur whenever the foods in their temperaments are colder and drier than they should be, because if the stomach and liver of a black bile humor predominant person, receive foods which are in their temperaments colder and drier than they should be, they will be transmuted into a black bile humor which is colder and drier than it should be, which will cause *the cold dry black bile humor diseases type*.

It becomes clear to us that the correlation between diseases and food in humoral medicine is strong and evident.

Diseases occur due to the four humors if they become non-moderate, either in their form, or quantity, or both of them. Subsequently the material cause of diseases is the four humors if they become non-moderate; the material cause in originating the four non-moderate humors is the non-moderate food. Thus the non-moderate food in its form and quantity is the main cause of diseases.

This concept is endorsed by what is sometimes demonstrated in modern medicine, that many diseases such as migraine diabetes and some other diseases, where sufferers have reported about the decrease of incidence of their diseases cases due to their identification and avoidance to certain food. Modern research considers as well that it is beneficial for the individual to avoid what has been a definite cause of diseases, in indication to food.
 
Written by:
Doctor Khaled Hijazi and Doctor Hani al-Batal

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