David Gray/Reuters

Holly Fennell sees about 50 tongues a week. The first thing the naturopath looks at is the colour. A “nice pinky-red” is normal, but many of her patients have a dark purple hue, which is her first clue that there is something off with their energy, or ch’i. A yellowish coating may indicate the flu or a cold. If the outside edge is bumpy, it could be a sign of anxiety. And Fennell, who has been practising Chinese medicine in Toronto’s tony Summerhill neighbourhood for 10 years, has a very deep line down the middle of hers, which she says points to her asthma. Patients think she is psychic, the way she reads their tongues.

Jen Miller, who lives in Toronto, has seen two traditional Chinese medicine (TCM) doctors. The first time, she was feeling sluggish, headachey and queasy, “not really a surprise because I’d recently had a bad breakup.”

The TCM doctor examined her mouth with a depressor and a little light, then asked her to move her tongue up and down. “She said, ‘Oh, not sleeping enough . . . you’re so sad . . . more water will make those headaches stop.’ ” Miller saw a second TCM doctor a year later for stubborn acne. “He started all our visits by looking in my mouth. The first time he looked in and said, ‘Uh! So much candy! All that sugar!’ ” The night before, admits Miller, she had eaten a box of chocolates. “Again, it was fascinating but creepy.” Continue…