I have been eating this way (very low carb, high fat, protein in between) for around 3 years now. I have found that for me I can MAINTAIN quite easily at an ideal weight and eating to satiety, but in order to actually LOSE weight, I have to at least have a very small calorie deficit. And though the change is gradual, it is sustainable and quite immediate (just little by little). The amount of that calorie deficit required in order to drop excess varies a lot from one individual to the next though, I think. I am particularly intolerant to hunger, and so I cannot overly emphasize how small of a deficit I will allow for. The nice thing about that though is that the hunger is far more pleasant in the absence of carbs.

Reduced hunger. Many people experience a marked reduction in hunger on a keto diet. This may be caused by an increased ability of the body to be fueled by its fat stores. Many people feel great when they eat just once or twice a day, automatically ending up doing a form of intermittent fasting. This saves both time and money, while also speeding up weight loss.
These types of back-and-forth weight fluctuations can contribute to disordered eating, Kizer says, or can worsen an already unhealthy relationship with food. “I think this diet appeals to people who have issues with portion control and with binge eating,” she says. "And in many cases, what they really need is a lifestyle coach or a professional counselor to help them get to the bottom of those issues."

When you’re burning more ketones, you can start releasing a bit of acetone, which smells like nail-polish remover. Or you might release ammonia. Sometimes you get that sulfur smell. For all of these, increase vegetable consumption. Over time, you’ll be more efficient at burning ketones, and a lot less of this will happen. If you’re getting an ammonia smell, it means you’re eating too much protein and need to cut back. A sulfur odor means there’s a gut issue, and you need to regulate your gut bacteria; you should take a type of probiotic called Pro EM-1, which you can find online.
You will need to cut out ALL sugar. Sugar substitutes are also a no-no. It will be a few tough days to adjust from all the sugar you have been consuming, you will not feel good at all! Look up keto flu, you will most likely suffer from this about a week into the diet. As for snacks, I have stuck to a few almonds, pepperoni sticks, cheese sticks ( cheese can kick you out of ketosis so be careful) pickles, and broth, cucumber slices. If you are in ketosis your appetite will diminish and your need for snacking will lessen. I also do intermittent fasting, no food after 8PM or before 12:00PM the next day, 16 hours without food, I will have bulletproof coffee in the morning, tea with milk and broth between these hours.

It is not necessary to be as strict with children as you would be for yourself. Children are generally more insulin sensitive than adults, which means their bodies can deal with sugars and carbs more efficiently. Focus on whole foods, good sources of protein, lots of good fats (essential for brain development), and getting carbs from nutrient-dense sources.

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.
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