Andrew Huberman· PhD
he went through and then classified them to say whether these are good quality food so they call it the Nova classification one two three four one is the food that you can almost eat raw fruits vegetables um yogurt and dairy products that you can almost without any preparation and then second Nova 2 is kind of home home cooked food that most people will prepare in few minutes and then three and then fourth one is the food that you can never prepare at home so for example biscuit or cookies that we usually purchase and few other things and usually the Nova 4 are unhealthy Ultra processed food so which we should not be eating