There has also been increased interest in the diet’s effects on aging and cognitive function. [9-11] Cell damage through stress and inflammation that can lead to age-related diseases has been linked to a specific part of DNA called telomeres. These structures naturally shorten with age, and their length size can predict life expectancy and the risk of developing age-related diseases. Telomeres with long lengths are considered protective against chronic diseases and earlier death, whereas short lengths increase risk. Antioxidants can help combat cell stress and preserve telomere length, such as by eating foods that contain antioxidants nutrients like fruits, vegetables, nuts, and whole grains. These foods are found in healthy eating patterns like the Mediterranean diet.  This was demonstrated in a large cohort of 4676 healthy middle-aged women from the Nurses’ Health Study where participants who more closely followed the Mediterranean diet were found to have longer telomere length. 
Unlike conventional diets, the Mediterranean diet doesn't restrict you to a daily allotment of calories, fat, or sodium. Instead, it’s about what you’re eating, from heart-healthy unsaturated fats to satiating, high-fiber foods. Taking these ideals to heart, we’ve constructed a Mediterranean diet meal plan for beginners from breakfast to dinner. Our recipes maximize flavor and nutrition to create balanced and colorful plates that marry whole grains with vegetables, lean proteins, and more. On top of all of this deliciously nutritious eating, make sure to work physical activity into your day, especially if you have a desk job.
Dr. Hallberg notes that it is easy to over-consume fat in liquids, especially full fat whipping cream. “Someone will come in and say they are in a weight loss plateau. We will look at their diet and see they are consuming six coffees, with two tablespoons of whipping cream in each one.” Cutting back on the whipping cream can get them out of a stall.
There is not one “standard” ketogenic diet with a specific ratio of macronutrients (carbohydrates, protein, fat). The ketogenic diet typically reduces total carbohydrate intake to less than 50 grams a day—less than the amount found in a medium plain bagel—and can be as low as 20 grams a day. Generally, popular ketogenic resources suggest an average of 70-80% fat from total daily calories, 5-10% carbohydrate, and 10-20% protein. For a 2000-calorie diet, this translates to about 165 grams fat, 40 grams carbohydrate, and 75 grams protein. The protein amount on the ketogenic diet is kept moderate in comparison with other low-carb high-protein diets, because eating too much protein can prevent ketosis. The amino acids in protein can be converted to glucose, so a ketogenic diet specifies enough protein to preserve lean body mass including muscle, but that will still cause ketosis.
Current weight — In order to lose weight, you need to be in a caloric deficit which means you need to burn more calories than you consume. That being said, your current weight is the number one determining factor for how fast you’ll be able to lose weight. This is because the heavier you are, the higher your metabolic rate is (your ability to burn calories in a given day). So, individuals with more weight to lose typically lose weight faster and more easily in the initial stages than those who don’t weigh as much.
However, this diet is gaining considerable attention as a potential weight-loss strategy due to the low-carb diet craze, which started in the 1970s with the Atkins diet (a very low-carbohydrate, high-protein diet, which was a commercial success and popularized low-carb diets to a new level). Today, other low-carb diets including the Paleo, South Beach, and Dukan diets are all high in protein but moderate in fat. In contrast, the ketogenic diet is distinctive for its exceptionally high-fat content, typically 70% to 80%, though with only a moderate intake of protein.
In fact, the FDA now allows olive oil labels to carry the claim that its monounsaturated fat can reduce heart disease risks -- with a few strings attached. The claim says that "limited and not conclusive scientific evidence" suggests that eating about 2 tablespoons of olive oil daily may reduce the risk of heart disease. To give this possible benefit, it adds, the olive oil must replace a similar amount of saturated fat in your diet -- and must not increase the total calories you eat in a day.