Overall, 12 studies including 1257 patients examined the impact of a VLCKD on HDL cholesterol. When assessing the data, the individuals assigned to a VLCKD achieved an average increase in HDL of 0.12 mmol/L. This was double the average increase in HDL of the low-fat dieters who achieved an average increase in HDL of 0.06 mmol/L.  As a result, the authors concluded that carbohydrate-restricted diets confer cardiovascular benefits because they improve levels on HDL in the body. 
• Standard ketogenic diet (SKD) — SKD is the type I typically recommend for most people, because it is very effective. It focuses on high consumption of healthy fats: As I explain in my book, "Fat for Fuel," you should aim for having 70 to 85 percent of your total daily calories to come from healthy fats. For your protein intake, the general rule of thumb is to follow the formula of 1 gram of protein for every kilogram of your lean body mass.
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.
Yes, they're technically a fruit, but we think olives deserve a shout-out all of their own, since they're also a great source of healthy fats and are one of a few keto-approved packaged foods. Plus, they're a great source of antioxidants, will satisfy your craving for something salty, and are blissfully low-carb. “About a palm's worth only has 3 grams of net carbs,” Sarah Jadin, RD, told Health in a previous interview.
The precise mechanisms behind the physiological effects of the ketogenic diet and ketones are not fully understood. It is believed that the ketogenic diet is anti-inflammatory, that it decreases free radical production while enhancing production of the body’s own natural anti-oxidants, and it improves metabolic efficiency.8 9 10 11 12 Specific conditions a ketogenic diet may benefit include:
Initial studies indicate that the ketogenic diet appears effective in other metabolic conditions, including phosphofructokinase deficiency and glycogenosis type V (McArdle disease). It appears to function in these disorders by providing an alternative fuel source. A growing body of literature suggests the ketogenic diet may be beneficial in certain neurodegenerative diseases, including Alzheimer disease, Parkinson’s disease, and amyotrophic lateral sclerosis. In these disorders, the ketogenic diet appears to be neuroprotective, promoting enhanced mitochondrial function and rescuing adenosine triphosphate production.
I have lost 20lbs, feel great, but feel deprived since this diet is so prohibitive of many fruits and vegetables. Not only that, my ldl is high! My Dr. recommended Avorstatin (20 mg). I will continue with a sensible eating routine – a small portion of foods and, yes, I will take the cholesterol med and see how the LDL measures in 6 months. I walk 10,000 steps or more daily and drink 2 bottles of water.
Perhaps the first person to really put ketogenic diets on the map was Dr. Robert C. Atkins, a cantankerous medical doctor who began experimenting with a low-carb diet in 1963. His first book, Dr. Atkins Diet Revolution, was published in 1972. Dr. Atkins died in 2003 from a tragic fall (interestingly, the Atkins website’s timeline does not mention his death), but his diet plan lives on today.
People suffering from diabetes and taking insulin or oral hypoglycemic agents suffer severe hypoglycemia if the medications are not appropriately adjusted before initiating this diet. The ketogenic diet is contraindicated in patients with pancreatitis, liver failure, disorders of fat metabolism, primary carnitine deficiency, carnitine palmitoyltransferase deficiency, carnitine translocase deficiency, porphyrias, or pyruvate kinase deficiency. People on a ketogenic diet rarely can have a false positive breath alcohol test. Due to ketonemia, acetone in the body can sometimes be reduced to isopropanol by hepatic alcohol dehydrogenase which can give a false positive alcohol breath test result.