Jalali recommends that her clients work with a medical professional who is familiar with the diet to get the best results. "I do not think most of the general population would benefit from a ketogenic diet, although it can be very beneficial for some. The diet can be extremely challenging to stay compliant on long term so I find that clients who are very motivated and have a strong support system seem to be most successful."
Stay hydrated. As carb intake is lowered, the kidneys will start dumping excess water being retained as a result of the former higher carb intake. Make sure to drink enough water to replace what gets lost. The old 6-8 glasses is a good rule, I guess, although just drinking to thirst will probably do the trick. If you find yourself getting headaches and muscle cramps, you need more water, and more minerals such as salt, magnesium and potassium, because the water loss also takes minerals with it. (See my low carb diet side effects page for more info).
The ketogenic diet — a high-fat and very low-carb eating plan — can be tough to start. After all, it’s likely a radical departure from the way you’re eating now (a typical standard American diet is high in carbohydrates and processed foods). But many people are trying the keto diet, which puts your body in a state of ketosis. That's what happens when your body’s carb-burning switch flips to a fat-burning one, a change that can cause weight loss and has even been credited with controlling diabetes. (1)
A metabolic process called ketogenesis and a body state called ketosis are responsible. Ketosis is simply a normal metabolic pathway in which body and brain cells utilize ketones to make energy, instead of relying on only sugar (i.e., carbohydrate). In fact, humans developed an evolutionary ability to burn ketones as an adaptation to periods of food scarcity. 
Achieving ketosis is a pretty straightforward, but it can seem complicated and confusing with all of the information out there.4If you want to learn more about ketosis and the scientific process around it, you can visit a very in-depth discussion about on Dr. Peter Attia’s website. Here’s the bottom line on what you need to do, ordered in levels of importance:
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