A few things:
1. Stop drinking. - Go fuck yourself. Seriously, go fuck yourself.
2. Cut out all carbs. - No. Your body chemistry (and brain activity) functions best with a balance of protein/fat/carbs. Every single day. Yes, you need fat in your diet too. Trust how nature devised the intricate systems in your body. Your endocrine system, your organs, everything. It had millions of years to figure it out, and the combinations that didn't work aren't around anymore. Don't reinvent the wheel based on same vain perception of a mirror image.
3. Keep moving. Seriously. Move, all the time. Cardio cardio cardio.
I am pretty sure he said he has a gluten allergy. He physically cannot have most carbs.
Sorta screws up your body chemistry argument