As soon as I stepped inside the supplement factory, the sweet smell of red berries filled the air. It reminded me of being a kid and gorging on chewable multivitamins — a not-quite-natural "mixed berry" scent that was both nostalgic and vaguely medicinal. As factory tour smells go, it could have been much worse. Inside Thorne's headquarters, raw materials from around the world were arriving by the pallet. Under the neon lights of a giant, temperature-controlled warehouse outside Charleston,