If you have health reasons that make you want to try it and eating bacon, eggs and steak salads every day sounds amazing, maybe you could swing it. If nothing makes you happier than a fresh piece of sourdough, or if beans are one of the protein sources you rely on, there’s no point in trying a diet that’s not going to work. (And, by the way, sourdough toast with mashed avocado for breakfast and black bean soup for lunch are really delicious and healthy.)
I’ve been following a ketogenic based “Way of Eating” or almost a year now, and I’ve never felt better. Fats are the main source of calories with it—NOT protein. Fats and proteins ARE essential for the body. Carbohydrates are not. The 20g of carbs are for net carbs, NOT total carbs. This means you can have a great deal of fiber from very nutrient filled veggies that don’t spike your blood sugar.
We do recommend everyone eat something every 4-5 hours to maintain a healthy metabolism. If your meals are more than 4-5 hours apart, a snack consisting of a protein and a carbohydrate is a great choice. The protein will help fill you up quicker and keep you feeling satisfied between meals. The protein also has a slower effect on your blood glucose than most carbohydrates, so when paired with carbohydrates, your blood sugar will not spike nearly as high. We recommend eating a protein with every meal and snack.
Note: Because you'll be excluding some major food groups on the keto diet (grains, many fruits) you should definitely think about taking a multivitamin—especially one that contains folic acid, which helps your body make new cells and is often found in enriched breads, cereals, and other grain products, says Julie Upton, R.D., cofounder of nutrition website Appetite for Health.
Think of each almond as a natural weight-loss pill. A study of overweight and obese adults found that, combined with a calorie-restricted diet, consuming a little more than a quarter cup of the nuts can decrease weight more effectively than a snack comprised of complex carbohydrates and safflower oil—after just two weeks! (And after 24 weeks, those who ate the nuts experienced a 62% greater reduction in weight and BMI!) For optimal results, eat your daily serving before you hit the gym. A study printed in The Journal of the International Society of Sports Nutrition found that almonds, rich in the amino acid L-arginine, can actually help you burn more fat and carbs during workouts. Fill up, but don’t fill out: Use these Eat This, Not That!-recommended 10 Daily Habits That Blast Belly Fat.
More good news: Snacks are totally allowed (and I'm not just talking about carrot sticks). There are plenty of packaged options out there designed for keto fans. FATBAR is one of them. These snack bars have 200 calories, 16 grams of fat, and four grams of net carbs. They're also plant-based and are made with almond or cashew butter, cocoa butter, coconut, pea protein, sunflower seeds, and chia seeds.