08/08/2013 03:31 pm ET Updated Oct 08, 2013

Birthwort Compound, Aristolochic Acid, Linked To Cancer


Many people turn to herbal supplements to improve their health. In China, belief in traditional medicine is so strong that pharmacies peddle unprocessed herbs alongside modern pharmaceuticals. But an ingredient found in certain supplements may be as cancerous as smoking, two new studies have found.

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