Source: irishtimes.com<\/p>\n
A recent survey of registered dietitians named the low-carbohydrate keto diet yet again as the most popular diet in the United States. In Ireland, it consistently ranks high in Google searches, with keto recipe books featuring high in the publishing charts \u2013 particularly at this time of year.<\/p>\n
Powering this diet is fat, and loads of it \u2013 all the way up to a hefty 90 per cent of one\u2019s daily calories.<\/p>\n
Its fans (and marketers) feed social media with before and after photos, crediting the diet for life-altering weight loss or other effects. They swirl butter into their coffee, load up on cheese, and eat lonely burgers without its bestie, the bun. Staples such as whole grains, legumes, fruit and starchy vegetables are being largely pushed off the plate as devotees strive for ketosis \u2013 when the body begins to burn fat instead of glucose as its primary energy source.<\/p>\n
The diet is hailed for dropping pounds, burning more calories, reducing hunger, managing diabetes, treating drug-resistant epilepsy, improving blood pressure and cholesterol, as well as triglycerides, the major storage form of fat in the body. People have reported improved concentration, too.<\/p>\n
First, a word: choosing an eating plan or an approach to eating is very personal. Everyone\u2019s body, tastes and background are unique. The best approach to food intake is one in which you are healthy and nurtured and matches your social and cultural preference. If you want guidance, it\u2019s recommended you consult with a dietitian.<\/p>\n
What is the ketogenic diet?<\/strong> The goal of the ketogenic diet is to enter a state of ketosis through fat metabolism. In a ketogenic state, the body uses primarily fat for energy instead of carbohydrates; with low levels of carbohydrate, fats can be converted into ketones to fuel the body.<\/p>\n For ketosis, a typical adult must stay below 20 to 50 grams of net carbohydrates \u2013 measured as total carbs minus fibre \u2013 each day. Crossing that threshold is easy: a thick slice of bread adds 21 carbohydrates, a medium apple 25, and a cup of milk 12. It\u2019s not just bread and soda that are on the outs but high sugar fruit and starchy veggies such as potatoes, as well as too much protein. Also, dieters have to be on high alert for hidden carbs, often invisible to the eye, yet coating that seemingly keto-friendly fried cheese.<\/p>\n Can I lose weight on the keto diet?<\/strong> How long does it take to see results on the keto diet?<\/strong> Usually, it takes between one to four days to enter the state, doctors say, but it depends on many factors such as activity level: a runner, for example, may sprint there faster than a couch potato.<\/p>\n The keto diet appears to deliver fast results: The first pounds may seem to slip off. That can be seductive, but it\u2019s likely water weight. Then, dietitians say, it\u2019s back to energy in minus energy out.<\/p>\n But can the ketogenic diet help to burn more calories?<\/strong> In the end, though insulin levels did decrease while eating the bunless burger, they didn\u2019t lose more fat than when they had bread. The study was limited, though, by having a small sample size, and not having a comparison group that wasn\u2019t on the back-to-back regimens.<\/p>\n For some, a low carb diet can be appealing.That doesn\u2019t mean that diet is superior, according to a study that followed 609 overweight adults on either a low carb or a low-fat diet for a year. In the end, both groups shed almost the same amount on average \u2013 about 12 to 13 pounds, according to the randomised clinical trial that examined a low carb diet less restrictive than the keto.<\/p>\n Does the ketogenic diet benefit long-term?\u00a0 <\/strong><\/p>\n It\u2019s not known yet. \u201cIf you tell people to go on this diet forever and for a longer term, there is no evidence,\u201d said Carla Prado, an associate professor and director of the University of Alberta\u2019s Human Nutrition Research Unit.<\/p>\n The diet does help children with epilepsy: Nearly a third to two-thirds of patients experience 50 per cent fewer seizures after six months on the regimen. (Even back in 400BC people fasted to treat epilepsy. And the ketogenic diet itself is nearly a century old, having been popular to help with seizures until the discovery of an anticonvulsant drug.) There are case studies on how 10 patients with a rare condition fared on the diet for a decade, but most well-designed studies in this field have not extended beyond two years.<\/p>\n
A \u201ctypical\u201d ketogenic diet consists of at least 70 per cent of calories derived from fat, less than 10 per cent from carbs and less than 20 per cent from protein. The ketogenic diet, long used to treat epilepsy in children, calls for 90 per cent of daily calories to come from fat, with the amount of protein or carbs varying as long as it\u2019s 4 grams of fat for every combined 1 gram of carb and protein, according to the American Epilepsy Society. That can mean chowing down on a lot of cheese, butter, eggs, nuts, salmon, bacon, olive oil, and non-starchy vegetables such as broccoli, cauliflower, greens and spinach. For the arithmetic-challenged, apps and online programmes can do the math for you.<\/p>\n
Yes. Certainly in the short-term, it appears that way. For the first two to six months, there\u2019s evidence that a very low carbohydrate diet can help you lose more weight than the standard high carbohydrate, low fat diet, according to a recent literature review of low-carb diets by the National Lipid Association in America. \u201cBy 12 months, that advantage is essentially gone,\u201d said Carol Kirkpatrick, director of Idaho State University\u2019s Wellness Center, and lead author of the new literature review. After that, weight loss seems to equalise between those two popular diet regimens. She said keto is best used to kick start a diet, before transitioning to a carb intake that you can adhere to for the longer term.<\/p>\n
For some, it\u2019s the promised land of diets. Instead of cringing through carrot sticks, they can fill up guilt-free on chorizo with scrambled eggs. Indeed, some evidence suggests that people feel less hungry while in ketosis, and have fewer cravings. \u201cThat\u2019s why it\u2019s become so popular for the general population,\u201d said Dr Mackenzie Cervenka, medical director of Johns Hopkins Hospital\u2019s Adult Epilepsy Diet Center. \u201cBecause once you are in ketosis, it\u2019s easy to follow.\u201d<\/p>\n
There is some evidence that it can. The research is limited and conflicting here, too. It may be a very small effect, and not meaningful for weight control. That\u2019s what one study found. In it, 17 obese or overweight volunteers moved into metabolic wards for two months and had every last spoonful of food monitored. (This recounting of the science uses definitional terms such as \u201cobese\u201d to be clear about the subjects of research studies.) For the first month, they consumed a high carb diet; for the second, they had a ketogenic one, with both plans equal in calories.<\/p>\n