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Timestamps:

0:00 – intro 
1:20 – overview of FGF21 and how it gets triggered 
6:40 – FGF21 works via stress, turning down metabolism and leading to weight regain 
11:30 – will the sugar diet cause negative effects if only used short-term?
21:44 – does eating protein at night prevent the negative effects? 
27:18 – the negative effects only occur in the research after long-term FGF21 upregulation