Following a very high-fat diet may be challenging to maintain. Possible symptoms of extreme carbohydrate restriction that may last days to weeks include hunger, fatigue, low mood, irritability, constipation, headaches, and brain “fog.” Though these uncomfortable feelings may subside, staying satisfied with the limited variety of foods available and being restricted from otherwise enjoyable foods like a crunchy apple or creamy sweet potato may present new challenges.
"Even though it's called the Mediterranean diet, it's not really a diet," said Atlanta registered dietitian Rahaf Al Bochi, a spokeswoman for the Academy of Nutrition and Dietetics. "It doesn't tell you what to eat and not eat. It's a lifestyle that encourages consuming all food groups but gives more weight to those which have the most health benefits."
A meta-analysis of 13 randomized controlled trials following overweight and obese participants for 1-2 years on either low-fat diets or very-low-carbohydrate ketogenic diets found that the ketogenic diet produced a small but significantly greater reduction in weight, triglycerides, and blood pressure, and a greater increase in HDL and LDL cholesterol compared with the low-fat diet at one year.  The authors acknowledged the small weight loss difference between the two diets of about 2 pounds, and that compliance to the ketogenic diet declined over time, which may have explained the more significant difference at one year but not at two years (the authors did not provide additional data on this).
Olive oil is an integral part of the "Mediterranean diet" which is associated with sensible tasty portions and slower, more enjoyable eating. People who eat a "Mediterranean diet" have been shown to have a remarkable variety of health benefits. The olive oil in the Mediterranean diet can quickly satisfy hunger and lead to fewer total calories ingested at mealtime. It is unclear if any single component of this diet is responsible for these health benefits or if it is a combination of olive oil and a diet high in vegetables, fruit and fish.
Research has consistently shown that the Mediterranean diet is effective in reducing the risk of cardiovascular diseases and overall mortality. [3, 4] A study of nearly 26,000 women found that those who followed this type of diet had 25% less risk of developing cardiovascular disease over the course of 12 years.  The study examined a range of underlying mechanisms that might account for this reduction, and found that changes in inflammation, blood sugar, and body mass index were the biggest drivers.
“This is one of the really big issues I see for women — it is so much entwined with psychology, self-esteem, and societal pressure, and in many ways outside of women’s control, “says Dr. Hallberg. “They succumb to ways they think they need to be, rather than what is healthy for them. If you see victory as only a number on a scale, you are going to sabotage yourself.”
We now know that ideally MCT oils like coconut oil should actually be consumed every day. Certain saturated fats, especially MCTs and other healthy fats found in things like coconut oil or grass-fed beef, are in fact easier to digest than long-chain triglycerides (LCTs) and might even have more benefits related to heart health, obesity prevention and brain health, too.
Similarly, in a study in the New England Journal of Medicine, scientists followed for years the diets and health of 22,043 adults in Greece. (12) Adherence to the traditional Mediterranean diet was assessed by a 10–point scale that incorporated the key facets of the diet, including an abundance of plant food (fruits, vegetables, whole-grain cereals, nuts, and legumes), olive oil as the main source of fat, and low–to–moderate amounts of fish and poultry.
How it’s done: Warm up the LEVL or Ketonix meter by plugging it in. Blow into it and wait for the flashing light indicating it’s reading your acetone levels. The software or the color and speed of the flashing light would tell your reading: green for least acetone, red for most acetone, less flashing for less acetone per color, more flashing for more acetone per color.
“The beneficial components of the Mediterranean diet,” concluded Robert Vogel, MD, and colleagues at the University of Maryland School of Medicine, “appear to be antioxidant-rich foods, including vegetables, fruits, and their derivatives such as vinegar, and omega–3–rich fish…” These foods, he continued, “appear to provide some protection against the direct impairment in endothelial function produced by high-fat foods, including olive oil.”
That doesn’t mean you’ll go hungry on a diet. It’s quite the opposite! You’re not starving yourself of calories but of carbohydrates. Your body won’t go into what’s known as starvation mode, which is where your metabolic rate drops considerably. You’re adding more fat to the diet and taking out the carbs, so the metabolism can still work, and you get the energy you need.
Judy Ridgway is an acclaimed food writer and international expert on olive oil. She was the first non-Italian judge to sit on the judging panel of the prestigious Leone d'Oro international awards for olive oil. She travels frequently to the producing regions meeting the growers and tasting the oils along the way. She is also in regular contact with specialist cooking schools, university agricultural departments and research institutes. Previous books featuring olive oil include two editions of Judy Ridgway's Best Olive Oil Buys Round the World and The Olive Oil Companion. She also has extensive experience of national TV and radio.
I've been doing the keto diet for a couple of years now, and there's one thing I can tell you: the longer you follow it, the more benefits you get! It also gets much easier! That's because, once your body is fat adapted for a long period of time, it get's easier to get back into ketosis. You simply need to train your body to do it. Once you've been fat adapted for a few months, you can even add a few carbohydrates back into your diet from time to time. So understand that you aren't saying goodbye to carbs forever, you are just getting smarter about how to use them! For more go to http://www.easyketomealplan.org/
Tallon, these suggestions are meant to be taken one at a time. If you’ve hit a plateau or are struggling with weight loss, you can try to cut back on your protein. If that doesn’t provide results than maybe that wasn’t the culprit..now try cutting back on dairy, see what happens with that. It’s all about finding what works for you. If you cut out everything at once, you’ll never know which one was causing the issue. Hope that makes sense.
What’s next for Flynn? With teaching, research, clinical and non-profit work on her plate, she still feels that there is much left to learn about the application of a plant-based diet that includes high-quality extra virgin olive oil. Securing funding remains challenging, which Flynn attributes in large part due to the “dismal failure” of low-fat diet research. She also is confident in the potential of using “food as medicine” to improve risk factors for chronic diseases among low-income groups, which offers dual benefits of improving lives as well as decreasing health care costs. She is also curious about the freshness of olive oil vis-à-vis its provision of health benefits and whether there is a cutoff at which these benefits begin to decline.
SOURCES: Environmental Nutrition, June 2003; May 2004; February 2005. The Journal of Pediatrics, July 1995. Journal of the American Dietetic Association, February 1997. Journal of the American Dietetic Association, July 1997. Journal of the American Medical Association, 2004; 292. Food Chemistry, May 2004, vol 85; issue 3. American Journal of Clinical Nutrition January 2005. FDA News, Nov. 1, 2004. The Olive Oil Source web site.