The Dr. Oz Show took viewers through an interactive quiz to help assess your Protective Qi—or immunity—deficiency.
The three-question evaluation, a more extensive version of which is also available in the introduction of the Yin Yang You book, asked about the color of your tongue, the volume of your voice, and the ease with which you break a sweat.

For instance:
- Is your tongue light red with a thin white coating and of proper size? Or is it pale and significantly larger than normal with visible toothmarks? Perhaps it’s somewhere in between.
- As for your voice, is it loud and clear? Or soft and low?
- And do you break a sweat only with intense physical activity? Or do you sweat with even minimal movement?
Quiz-takers earned points based on their responses, and the higher the score, the more vulnerable is your Protective Qi and the worse off your immune system.
The full segment appeared during the Oct. 26 broadcast of The Dr. Oz Show.
“Qi is a traditional Chinese medicine concept that has to do with the flow of energy,” Dr. Rob Sinnott, a collaborator on Yin Yang You, explained in the segment. “Protective Qi provides the immunity and protection against pathogens getting into your body.”
Dr. Sinnott, the Chief Scientific Officer at USANA, referenced a clinical study that found combining traditional Chinese herbs with Western technologies helped to boost Protective Qi.
Protecting Cells: East Meets West
Dr. Oz visited Beijing and collaborated on Yin Yang You with Dr. Anlong Xu, professor of molecular biology and president of Beijing University of Chinese Medicine.
USANA scientists also collaborated on the book. In The Dr. Oz Show segment, Dr. Sinnott explained how micronutrients that are designed to nourish, protect, and renew cells assist in combating external toxins.
The collaborative research and writing culminated in September when Yin Yang You debuted at the 2021 Concordia Annual Summit in New York. There, the authors were able to share their ideas with world leaders on a grand stage.
“Change happens when you bring great minds together,” Dr. Oz said in the episode featuring Yin Yang You.
