The “volumes” refer to a series of DVDs (now digital only) upon which is based (all proceeds are donated to this charity). The DVDs give folks the opportunity to sneak-preview videos months ahead of time, watch them all straight through, and share as gifts, but there’s nothing on the DVDs that won’t eventually end up online for free at You can also buy the DVD streaming online or as a download in full! Volume 50 is the 45th DVD covering the peer-reviewed scientific nutrition. For more information about Volume 50 click here.

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