Are doctors’ beliefs, from ancient days, still relevant today?

2000 years after it was developed, some hundred years after it became esoteric and was kept by very few, we can again study, unfold and develop Jawhar – the Theory of Humour and Phlegm, the medical theory that was prevalent in our area for thousands of years.

How did the doctors think in the olden days?

How can we use their philosophy and methods to improve our lives today?


Jawhar is the Arab word for meaning (essence, nature), and it represents the way of thinking of doctors and philosophers that practicedin the Levant inn the middle-ages.

The medical writings of Maimonides and the doctors of the middle-ages and local nutritional theories developed by physicians all use similar concepts: Humors, phlegm, elements, spirit and meaning.

Can we learn from them?


Uri Mayer-Chissick is expert an on ancient nutrition. His PhD thesis deals with old medical theories and practices and their relation to nutritional habits and human health. Uri has been studying the writings left by doctors and philosophers in order to enable us to treat ourselves and lead healthier lives.

Uri gives lectures on ancient madicine, and workshops that pass on the tools of ancient medicine to anyone who’d like to use them today.