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Daba Yague

 I haven't tried keto but hopefully theres not crazy side effects

happywalking

I would think it depends. 
Because this diet rely heavily on using fat as energy source, so if one don't have enough fat or can be dangerous. 

Also there should be a transitional period from your regular diet to keto for your body to adjust. 

I am no professional, it's just my own opinion.