Another Dr Been presentation.https://www.youtube.com/watch?v=Gbn0ZTlgMo0https://www.youtube.com/watch?v=Wv-9p7SpzCM&t=1673s&pp=ygUYZHIgbW9iZWVuIHN5ZWQgYmVyYmVyaW5lThe last one is about toxicity but there is actually a lot of interesting information that has to do with things other than toxicity. More to the presentation than first meets the eye.