"The Bulletproof Diet: Lose Up to a Pound a Day, Reclaim Energy and Focus, Upgrade Your Life" by Dave Asprey introduces a high-fat, moderate-protein, low-carb approach designed to enhance metabolism, cognitive function, and energy levels. The diet emphasizes quality fats like grass-fed butter and MCT oil while eliminating processed foods and sugars. Bulletproof Coffee plays a central role, supporting sustained energy and ketosis. Shifting to nutrient-dense foods and intermittent fasting may improve focus, weight management, and overall well-being.