Tongue analysis software uses ancient Chinese medicine to warn of disease

Timothy Wall
EurekAlert

COLUMBIA, Mo. — For 5,000 years, the Chinese have used a system of medicine based on the flow and balance of positive and negative energies in the body. In this system, the appearance of the tongue is one of the measures used to classify the overall physical status of the body, or zheng. Now, University of Missouri researchers have developed computer software that combines the ancient practices and modern medicine by providing an automated system for analyzing images of the tongue.

“Knowing your zheng classification can serve as a pre-screening tool and help with preventive medicine,” said Dong Xu, chair of MU’s computer science department in the College of Engineering and study co-author. “Our software helps bridge Eastern and Western medicine, since an imbalance in zheng could serve as a warning to go see a doctor. Within a year, our ultimate goal is to create an application for smartphones that will allow anyone to take a photo of their tongue and learn the status of their zheng.”

The software analyzes images based on the tongue’s color and coating to distinguish between tongues showing signs of “hot” or “cold” zheng. Shades of red and yellow are associated with hot zheng, whereas a white coating on the tongue is a sign of cold zheng.

“Hot and cold zheng doesn’t refer directly to body temperature,” said Xu, who is also on the faculty of the Bond Life Sciences Center. “Rather, it refers to a suite of symptoms associated with the state of the body as a whole.”

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