We all think we know about vitamins – and we’re told they’re essential – but why do really need them and why can’t we produce them on our own? These are a few questions on the mind of intrepid filmmaker and health-freak Bryce Sage who travels from Washington DC to San Francisco to get to the bottom of the vitamin mystery.由玄天影院全網(wǎng)絡(luò)收集并分享發(fā)布,僅供用于學(xué)習(xí)和交流。
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