These diets were shown to reverse redox signalling pathways that increase the malignancy of tumours , and to possess anticonvulsant effects in humans that could be related to increased mitochondrial mitochondrial biogenesis [2,3]. In fact, ketogenic diets can also constitute a first line of treatment for mitochondrial myopathies due to improvement of mitochondrial activity resulting from increased mitochondrial biogenesis [4,5]. Although these diets can lead to some short and long-term adverse effects they are effective and potentially nontoxic metabolic therapies for the treatment of chronic neurological disorders, also exerting a protective action against brain tumour angiogenesis and ischaemic injuries. In summary, there are a number of mechanisms to explain how ketogenic diets produce such positive effects on epileptic 2016 Stichting European Society for Clinical Investigation Journal Foundation KETOGENIC DIETS AND MITOCHONDRIA Ca2 Na K K ↓Glucose KATP ↓ATP β-OHB BAD Pyruvate PDH Ac-CoA TCA cycle Figure 4 Mechanisms activated by ketogenic diets in the treatment of epilepsy.

In view of the popular uptake of the keto diet even among subjects not in need of weight loss, there is some preoccupation with the potential long-term consequences of a wide embrace of this diet by large segments of the population. Section snippets The ketogenic diet is safe and more effective than other diets It has been said that: "The illiterate of the 21st century will not be those who cannot read and write, but those who cannot learn, unlearn, and relearn." Despite nearly 50 years of clinging to the dogma that saturated fat is detrimental to health, that total cholesterol is associated with mortality, and despite developing extremely effective therapies to reduce cholesterol, we continue to see an ever-expanding epidemic of obesity, diabetes, and increasing incidence of coronary heart There is no scientific proof of the superiority, safety and sustainability of the ketogenic diet It is hard to image a debate more animated and scientifically weaker than any debate centered around diets.

Dans la présente étude qualitative, notre objectif est de comprendre le point de vue des patients diabétiques sur le RC, notamment les raisons de le commencer, les motivations, les systèmes de soutien, les sources d'information et les enjeux. Les participants ont rapporté les avantages du régime tels que la régulation de la glycémie, la perte de poids et la satiété, qui semblaient fortement l'emporter sur les enjeux comme le manque de soutien de la part des professionnels de la santé et le manque de sources d'information.

A review article also reported positive changes in the gut microbiome and overall health in energy-restrictive diets or diets rich in fiber and vegetables [18 ]. Thus, people eating processed and bland food had reduced diversity of their microbiota, while people eating a diet rich in fruit and vegetables had increased diversity in their gut microbiota [19 ]. Moreover, gut biomes that lacked genetic diversity were related to overall adiposity, insulin resistance, dyslipidemia, and an inflammatory phenotype [20 ]. Discovering how the gut microbiota and diet interact and how this interaction is connected to overall health, is critical. The Shai study [59 ] compared a low-fat, restricted-calorie diet, a Mediterranean, restricted-calorie diet, and a low-carbohydrate, non-restricted calorie diet on 322 moderately obese subjects over a period of two years.

KD Type Macronutrient Proportion General Characteristics Carbohydrate Fat Protein Classic ketogenic diet 4 90 6 Developed for epilepsy treatment Medium-chain-triglyceride ketogenic diet 17 73 10 MCT supplements should be incorporated into all meals and snacks The modified Atkins diet 5 65 30 No restriction on energy content, fluid, or protein The modified ketogenic diet 5 65-80 20-25 No restriction on energy Very low-calorie ketogenic diet 13 44 43 Total energy intake of <800 kcal/day Ketogenic Mediterranean diet/modified Mediterranean ketogenic diet <30-50 g/day 45-50 30-35 With an emphasis on lean meats, fish, olive oil, walnuts, and salad 2.2. Low-fat diet Greater in glucose and insulin levels, insulin sensitivity, weight, adiposity, and more favorable TG, HDL-C, and TC/HDL-C ratio in the low carbohydrate diet group compared with the low-fat diet group Li S, 2022, China Dashti HM, 2006, Kuwait Volek JS, 2009, USA 60 overweight or obese patients newly diagnosed with T2DM 66 healthy obese patients with a high cholesterol level and normal cholesterol level 40 subjects with atherogenic dyslipidemia RCT Non-randomized clinical trial RCT 12 weeks Low carbohydrate diet % carbohydrate: fat: protein = 12:59:28 Nutrients 2022, 14, 3499 13 of 22 Table 2.

The ketogenic diet, or keto diet, emerged in popularity after a recent series of other low-carbohydrate diets, such as the Paleo and Atkins diets. The ketogenic diet is unique from other low-carbohydrate diets in that followers of the diet are encouraged to forgo nearly all carbohydrates, avoid excess protein, and consume high levels of fat, resulting in the production of ketones, giving the diet its name.

From a strictly biochemical point of view it is not actually a ketone body since the ketonic moiety is reduced to a hydroxyl group; it is though grouped among the ketone bodies. Even though the main ketone body produced in the liver is acetoacetate, the primary circulating ketone is β-hydroxybutyrate that is not, strictly speaking, a ketone body because the ketone moiety has been reduced to a hydroxyl group.

ARTICLE IN PRESS Prostaglandins, Leukotrienes and Essential Fatty Acids 70 309-319 Review The therapeutic implications of ketone bodies: the effects of ketone bodies in pathological conditions: ketosis, ketogenic diet, redox states, insulin resistance, and mitochondrial metabolism Richard L. Veech* Laboratory of Membrane Biochemistry and Biophysics, National Institutes of Alcoholism and Alcohol Abuse, 12501 Washington Ave., Rockville, MD 20850, USA Received 10 August 2003; accepted 1 September 2003 Abstract The effects of ketone body metabolism suggests that mild ketosis may offer therapeutic potential in a variety of different common and rare disease states. The data on metabolic effects of ketone body metabolism presented here has been published previously [1,2]. It presents studies of the isolated working rat heart perfused with 11 mM glucose alone, glucose plus 1 mM acetoacetate and 4 mM d-b-hydroxybutyrate, glucose 100 nM insulin or the combination of glucose, ketone bodies and insulin.

LGIT is lower in fat and higher in carbohydrates, yet similar efficacy to the traditional CKD. Intriguingly, clinical efficacy of the diet seems to correlate with more stable blood glucose and probably insulin levels and do not correlate with ketosis, which is inconsistent in LGIT. Even if the concept of LGIT is relatively new to the field of neurology, diets with low GI are linked with favorable health measures for diabetes, heart disease, obesity and polycystic ovary syndrome [62,63], perhaps it is needed to conduct studies with epilepsy and such comorbidities. Abbreviations ACA AMPA ASM BCAA BHB CD CKD 2-DG FADH2 FFA GABA KB MAD LCTs LGIT LGS MCT MKD NADH PUFA QT REM TCA Acetoacetate aminomethylphosphonic acid anti-seizure medication branch-chained amino acids β-hydroxybutyrate combined diet classic ketogenic diet 2-deoxyglucose flavin adenine dinucleotide, reduced form free fatty acids gamma-aminobutyric acid ketone bodies modified Atkins diet long-chain triglycerides low-glycemic-index diet Lennox-Gastaut syndrome medium chain triglyceride modified ketogenic diet nicotinamide adenine dinucleotide, reduced form polyunsaturated fatty acids interval calculated from the start of Q wave to the end of T wave in electrocardiogram rapid eye movements tricarboxylic acid Nutrients 2020, 12, 2616 16 of 23 References 1.

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