carmendrahl writes: "Consumers who see “natural” products as safer than pharmaceuticals drove herbal and botanical supplement sales to $5.3 billion in 2011, up $1 billion in a decade. But botanicals are usually complex blends, which presents different challenges than pharmaceuticals. Some suppliers are now carefully controlling plant growth to ensure a consistent product and consistent study results. (Soil, light, pesticide use all can matter). Others are honing analysis techniques to better understand blends and ferret out intentionally doctored batches."
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