Individuals can adopt Bryan Johnson's 'optimal nutrition' protocol by removing 400 calories from their current diet.

“yes, built all of this on a caloric deficit. initially ~2,000 cal and more recently 2,250.”

“You can choose what 400 calories to take out of your existing diet to maintain the same caloric intake.”

“This is swapping in 400 calories of optimal nutrition.”

“so I consume 2150 calories a day and we try to make every single calorie perfectly suited for my body don't waste a single thing and so this represents all of our scientific work all evidence-based medicine we try to have zero guesswork it's all based upon hundreds of measurements for my body that generate the data look at that from evidence-based medicine then we then formulate these recipes”

“I consumed 2150 calories a day we try to make every single calorie perfectly suited for my body we don't waste a single thing and so this represents all of our scientific work all evidence-based medicine we try to have zero guesswork it's all based upon hundreds of measurements in my body that generate the data look at that through evidence-based medicine then we formulate these recipes”

“I have 2 000 calories every day it's a 20 caloric restrictions every calorie has to fight for its life there's nothing in there that's nice to have there's nothing that's trendy or cool or something it's an absolute necessity”