As for meat products, those who are concerned about environmental impact, choose grass-fed beef and dairy.
A grocery list for keto diet includes plenty of healthy fats as fat makes up most of your calories. Healthy fats include omega-3s from mackerel, salmon, tuna, and other types of seafood as well as saturated fats found in butter and red meat ( *, *). As for meat products, those who are concerned about environmental impact, choose grass-fed beef and dairy.