Pictured is the Rhododendron, also known as “Labrador tea.”

Why do some plants have medicinal value for humans? Plants produce multitudes of chemicals. Some of these chemicals are of primary importance in their metabolic processes and some are secondary. The bulk of chemicals that have medicinal value are in the secondary category, and in the past, scientists thought that these chemicals were useless by-products….

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Dr. Annamarie Hatcher