Also make sure that you know what foods have mostly carbs, fat, and protein, so you can make the right choices. For instance, it’s not just bread, pasta, chips, cookies, candy, and ice cream that contain carbs. Beans may contain protein, but they’re also very high in carbohydrates. Fruit and veggies also mostly contain carbs. The only foods that don’t contain carbs are meat (protein) and pure fats, like butter and oils (including olive oil and coconut oil).
If you’re not sure after your initial test, explore other healthy diets such as clean eating and always have in mind that your number 1 goal should be to avoid overly processed foods (keeping this definition fairly broad of course, as we live in the 21st century and have to adapt to modern age as well, where hardly any of us have time to spend 12 hours a day evolving around food production, gathering and cooking).
"I recommend designing the meal around the fat and protein sources, since the carbohydrates are very limited. For example, if someone is having tuna for lunch, they may consider adding mayo to it. I also think a common mistake made on the diet, is individuals focus on reducing carbohydrates, but they do not increase their fat adequately. This may make it difficult to go into ketosis, especially if they are consuming too much protein. Some adults can be on a stable ketogenic diet consuming 50 net carbs whereas some may need to restrict to 15 net carbs."
One thing many people love about keto diet meal plans is that tracking your food is optional. "One of the biggest benefits of the ketogenic diet is that there's no need to meticulously track your calories like you may in other diets," notes Dr. Josh Axe, D.N.M., C.N.S., D.C., founder of DrAxe.com, best-selling author of Eat Dirt, and cofounder of Ancient Nutrition. "Because you're filling up on fat and protein, you're more likely to feel satisfied and energized all day long, which causes you to naturally eat less." This isn't to say that food tracking on keto is discouraged. "Some people may find calorie counting a useful tool to be more mindful and aware of what they're eating, but it's not necessary on the ketogenic diet," says Dr. Axe, but there's no need to get too stressed about hitting a certain caloric goal, especially if you're not trying to lose weight. (Related: The #1 Reason to Stop Counting Calories)
That’s why many health experts are concerned about people on the keto diet, especially those who try it without the guidance of a doctor or nutritionist. Doctors say that high-fat diets like this one may raise cholesterol levels, and some studies suggest that they increase the risk of diabetes. Some have even called it a “cardiologist’s nightmare.”
The problem is that, with a bit more time, the pancreas eventually stops compensating, becomes exhausted, and makes less and less insulin—allowing the sugar in your blood to go higher and higher. So, the first stage of insulin resistance is normal or low blood sugars due to excessive compensation of insulin. Then this is followed by higher and higher blood sugars as you lose the ability to compensate for the sugar with insulin. This is called diabetes.
Eggs have gotten some bad press in the past, but according to Franziska Spritzler, R.D., a certified diabetes educator in Huntington Beach, California, "eating whole eggs has been shown to modify blood cholesterol in a way that actually reduces risk of heart disease and stroke." She adds that eggs are also a great source of choline, which is necessary for brain and liver health.
Your glycogen stores can still be refilled while on a ketogenic diet. A keto diet is an excellent way to build muscle, but protein intake is crucial here. It’s suggested that if you are looking to gain mass, you should be taking in about 1.0 – 1.2g protein per lean pound of body mass. Putting muscle on may be slower on a ketogenic diet, but that’s because your total body fat is not increasing as much.5Note that in the beginning of a ketogenic diet, both endurance athletes and obese individuals see a physical performance for the first week of transition.