Is it required to eat organic and grass-fed foods while on keto?
Getting your body into a healthy state of nutritional ketosis simply requires you to reduce your carbohydrate intake significantly well below 50g daily, moderating down on your protein consumption, and then eating enough fat to feel satisfied.
But the added benefit that comes from inserting nutrient-dense foods such as organic vegetables and grass-fed beef and butter, for example, are the plethora of micronutrients that help optimize your health and heal your body. Always pursuing more real foods in your diet is the logical progression.
So while it is not a requirement, it certainly is the goal to choose much better quality foods as you live your ketogenic lifestyle.