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5

Yerba Mate Caffeine

Do you have data on Yerba Mate caffeine content when brewed using traditional method and refilling water? Specifically how caffeine do you consume if you refill 5 times? Is it 5x as much as original pour?

12

Metformin use for healthy adults

What are your thoughts on healthy adults (age 40+) utilizing Metformin to manage weight? I'm 6' 2" and weight about 200 lbs. I'm also very active, and workout daily. I've read a number of articles regarding the beneficial use, maybe even life extending benefits of Metformin. Is there any strong clinical data to suggest Metformin should/should not be taken by non-obese, non pre-diabetic individuals? Will using Metformin help better manage weight gain for those who are trying to keep off the extra 4-5 lbs that invariably find a way to stick if one isn't strictly following a diet protocol?

9

Bulletproof coffee

Any thoughts on Dave Asprey’s bulletproof coffee? Beneficial, harmless or dangerous?

7

Kava as a natural, healthy alcohol replacement

There has been some hype about Kava as a healthy mood enhancer/alcohol replacement for social events. Can you share any studies you have found for kava and any insights you have on the subject ?

3

Reading while walking

Andrew, what are you thoughts on reading a book, protocol, research article while walking? I find it difficult to get a healthy number of steps throughout the day and wanted to read while walking on a treadmill to "kill two birds with one stone". Do you retain as much/more/less this way?