A ketogenic diet is specific; the entire point is to eat foods that get you into ketosis and keep you there. But it’s not just eating keto-friendly foods that influences your ketone levels. The amount of food you eat and your specific reactions to foods and activities can affect your ketone levels and blood-glucose levels, which in turn can affect your success with ketosis. This means you can be doing everything “right” and still struggle to reach the levels of ketosis you desire. The only way to find out is to test your ketone levels.