He's become obsessive about vegetable juicing, and ticked off his favorite ingredients: kale, red chard, beets, lemon, spinach, ginger root.

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In theory, ginger-containing products such as ginger ale, ginger snaps, and other products could reduce nausea, too, but only if they contained real ginger root, not just ginger flavoring.

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If you're feeling queasy, Ryan says, consuming fresh ginger root from the grocery store can help, but purified capsules may work better due to their easier absorption in the gastrointestinal tract.

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In the book's final scene, Mackenzie digs into a feast of larks and venison haunch bathed in a sauce made from cow's udder, sliced ginger, horseradish root, juniper and pine kernels.

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Turmeric, ground from Curcuma longa, a knobby root that looks similar to fresh ginger, has been used as an anti-inflammatory in India for thousands of years, says Shailinder Sodhi, who teaches ayurvedic, or traditional Indian, medicine, at Bastyr University, in Kenmore, Wash.

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