A news headline displaying "Herbalife" is seen under the DowJones electronic ticker at Times Square in New York in this January 9, 2013 file photo. Herbalife Ltd shares tumbled nearly 10 percent on ... more 
A news headline displaying "Herbalife" is seen under the DowJones electronic ticker at Times Square in New York in this January 9, 2013 file photo. Herbalife Ltd shares tumbled nearly 10 percent on January 21, 2014 as investors grew concerned about the possible fallout from a regulatory probe in China into Nu Skin, which has a similar business model to the nutrition and weight loss company. REUTERS/Shannon Stapleton/Files (UNITED STATES - Tags: BUSINESS FOOD HEALTH) less 
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Reuters | Photo By SHANNON STAPLETON / Reuters
Tue, Jan 21, 2014 2:22 PM EST