scholarly journals The Chemistry of the Ketogenic Diet: Updates and Opportunities in Organic Synthesis

2021 ◽  
Vol 22 (10) ◽  
pp. 5230
Author(s):  
Michael Scott Williams ◽  
Edward Turos
Keyword(s):  
Weight Loss ◽  
Chemical Synthesis ◽  
Organic Synthesis ◽  
Ketogenic Diet ◽  
Health Benefits ◽  
The Body ◽  
High Fat ◽  
Strict Adherence ◽  
Chemical Basis ◽  
Low Carbohydrate

The high-fat, low-carbohydrate (ketogenic) diet has grown in popularity in the last decade as a weight loss tool. Research into the diet’s effects on the body have revealed a variety of other health benefits. The use of exogenous ketone supplements to confer the benefits of the diet without strict adherence to it represents an exciting new area of focus. Synthetic ketogenic compounds are of particular interest that has received very little emphasis and is an untapped area of focus for chemical synthesis. In this review, we summarize the chemical basis for ketogenicity and opportunities for further advancement of the field.

scholarly journals Popular Diets: Ketogenic Diet

EDIS ◽  
2020 ◽  
Vol 2020 (5) ◽  
Author(s):  
Kelsey Gemmill ◽  
Daniela Rivero-Mendoza ◽  
Wendy J. Dahl
Keyword(s):  
Social Media ◽  
Weight Loss ◽  
Ketogenic Diet ◽  
Human Nutrition ◽  
Food Science ◽  
High Fat ◽  
Carbohydrate Diet ◽  
Low Carbohydrate Diet ◽  
The Past ◽  
Low Carbohydrate

The ketogenic diet is a high-fat, very low carbohydrate diet. The first documented use of the ketogenic diet was in 1921 to treat epilepsy in children. In the past few years, the ketogenic diet has resurged in popularity as a potential means for weight loss. The ketogenic diet has become popular due to celebrity endorsement and social media influences. This new 4-page publication of the UF/IFAS Food Science and Human Nutrition Department explains the concepts behind this diet, explores the available menu, and examines whether this diet is safe and effective. Written by Kelsey Gemmill, Daniela Rivero-Mendoza, and Wendy Dahl.https://edis.ifas.ufl.edu/fs403

A high-fat, ketogenic diet induces a unique metabolic state in mice

2007 ◽  
Vol 292 (6) ◽  
pp. E1724-E1739 ◽  
Author(s):  
Adam R. Kennedy ◽  
Pavlos Pissios ◽  
Hasan Otu ◽  
Bingzhong Xue ◽  
Kenji Asakura ◽  
...  
Keyword(s):  
Gene Expression ◽  
Weight Loss ◽  
Energy Expenditure ◽  
Ketogenic Diet ◽  
Metabolic Effects ◽  
Acid Oxidation ◽  
High Fat ◽  
Metabolic State ◽  
Ketogenic Diets ◽  
Low Carbohydrate

Ketogenic diets have been used as an approach to weight loss on the basis of the theoretical advantage of a low-carbohydrate, high-fat diet. To evaluate the physiological and metabolic effects of such diets on weight we studied mice consuming a very-low-carbohydrate, ketogenic diet (KD). This diet had profound effects on energy balance and gene expression. C57BL/6 mice animals were fed one of four diets: KD; a commonly used obesogenic high-fat, high-sucrose diet (HF); 66% caloric restriction (CR); and control chow (C). Mice on KD ate the same calories as mice on C and HF, but weight dropped and stabilized at 85% initial weight, similar to CR. This was consistent with increased energy expenditure seen in animals fed KD vs. those on C and CR. Microarray analysis of liver showed a unique pattern of gene expression in KD, with increased expression of genes in fatty acid oxidation pathways and reduction in lipid synthesis pathways. Animals made obese on HF and transitioned to KD lost all excess body weight, improved glucose tolerance, and increased energy expenditure. Analysis of key genes showed similar changes as those seen in lean animals placed directly on KD. Additionally, AMP kinase activity was increased, with a corresponding decrease in ACC activity. These data indicate that KD induces a unique metabolic state congruous with weight loss.

scholarly journals An 8-Week, Low Carbohydrate, High Fat, Ketogenic Diet Enhanced Exhaustive Exercise Capacity in Mice Part 2: Effect on Fatigue Recovery, Post-Exercise Biomarkers and Anti-Oxidation Capacity

Nutrients ◽  
2018 ◽  
Vol 10 (10) ◽  
pp. 1339 ◽  
Author(s):  
Qingyi Huang ◽  
Sihui Ma ◽  
Takaki Tominaga ◽  
Katsuhiko Suzuki ◽  
Chunhong Liu
Keyword(s):  
Open Field ◽  
Ketogenic Diet ◽  
The Body ◽  
Exhaustive Exercise ◽  
Blood Biomarkers ◽  
High Fat ◽  
Post Exercise ◽  
Low Carbohydrate Diet ◽  
Low Carbohydrate ◽  
Fatigue Recovery

A low-carbohydrate, high-fat ketogenic diet (KD) is a nutritional approach ensuring that the body utilizes lipids. In our previous study, we found that an eight-week ketogenic high-fat, low-carbohydrate diet increased the capacity of endurance exercise in mice without aggravated muscle injury, despite the decrease of absolute muscle volume. The potential mechanism is most possibly to be enhanced capacity to mobilize and utilize fat. In the present study, we investigated whether a ketogenic diet influences post-exercise recovery by measuring blood biomarkers, muscle and liver oxidative state as well as fatigue recovery 24 h post exercise by employing an open-field locomotion test. Several biochemistry markers indicating exercise-induced injury after exhaustive exercise were improved by KD, followed by a 24-h rest with free feed access, including lactate. No aggravated hepatic oxidative damage was observed, whereas muscular oxidative stress was increased by KD. Accelerated recovery induced by exhaustive exercise was also observed from blood biomarkers of injury. For fatigue recovery, lactate concentration, a marker often employed as exhaustion index was lowered by KD, whereas an open field test showed that KD application contributed to increased locomotion after exhaustive exercise, followed by a 24-h rest. These results suggest that KD has the potential to be used as a fatigue-preventing and/or recovery-promoting diet approach in endurance athletes.

scholarly journals α-Methyl-L-Tryptophan as a Weight-Loss Agent in Multiple Models of Obesity in Mice

2021 ◽  
Author(s):  
Sathish Sivaprakasam ◽  
Sabarish Ramachandran ◽  
Mohd Omar Faruk Sikder ◽  
Yangzom Doma Bhutia ◽  
Mitchell Wachtel ◽  
...  
Keyword(s):  
Weight Loss ◽  
High Fat Diet ◽  
Amino Acid Profile ◽  
Normal Diet ◽  
The Body ◽  
Multiple Models ◽  
High Fat ◽  
Liver And Kidney ◽  
Obesity In Mice ◽  
Treatment Of Obesity

a-Methyl-L-tryptophan (a-MLT) is currently in use as a tracer in its 11C-labeled form to monitor the health of serotonergic neurons in humans. In the present study, we found this compound to function as an effective weight-loss agent at pharmacological doses in multiple models of obesity in mice. The drug was able to reduce the body weight when given orally in drinking water (1 mg/ml) in three different models of obesity: normal mice on high-fat diet, Slc6a14-null mice on high-fat diet, and ob/ob mice on normal diet. Only the L-enantiomer (a-MLT) was active while the D-enantiomer (a-MDT) had negligible activity. The weight-loss effect was freely reversible, with the weight gain resuming soon after the withdrawal of the drug. All three models of obesity were associated with hyperglycemia, insulin resistance, and hepatic steatosis; a-MLT reversed these features. There was a decrease in food intake in the treatment group. Mice on a high-fat diet showed decreased cholesterol and protein in the serum when treated with a-MLT; there was however no evidence of liver and kidney dysfunction. Plasma amino acid profile indicated a significant decrease in the levels of specific amino acids, including tryptophan; but the levels of arginine were increased. We conclude that a-MLT is an effective, reversible, and orally active drug for the treatment of obesity and metabolic syndrome.

scholarly journals Ketogenic Diet-Induced Severe Ketoacidosis in a Lactating Woman: A Case Report and Review of the Literature

2019 ◽  
Vol 2019 ◽  
pp. 1-4
Author(s):  
Benedicta Nneoma Nnodum ◽  
Eziafa Oduah ◽  
David Albert ◽  
Mark Pettus
Keyword(s):  
Ketogenic Diet ◽  
Case Reports ◽  
High Fat ◽  
Carbohydrate Diet ◽  
Low Carbohydrate Diet ◽  
Lactating Mothers ◽  
Low Carbohydrate ◽  
Life Threatening ◽  
Clinically Significant ◽  
Prompt Diagnosis

The ketogenic diet (KD) is a high-fat, adequate-protein, and low-carbohydrate diet that leads to nutritional ketosis and weight loss. It is known to induce ketosis but is not an established cause of clinically significant ketoacidosis. Lactation ketoacidosis is well established in bovine literature but remains a rare phenomenon in humans. Here we present a life-threatening case of severe ketoacidosis in a nondiabetic lactating mother on a strict ketogenic diet. We review the available case reports of lactation ketoacidosis in humans and the mechanisms thereof. Although ketogenic diet has been shown to be safe in nonpregnant individuals, the safety of this diet in lactating mothers is not known. Health professionals and mothers should be made aware of the potential risk associated with a strict ketogenic diet when combined with lactation. Prompt diagnosis and immediate treatment cannot be overemphasized. To our knowledge, this is the first reported case of life-threatening lactation ketoacidosis associated with ketogenic diet while consuming an adequate number of calories per day.

scholarly journals Long-Term Ketogenic Diet Induces Metabolic Acidosis, Anemia, and Oxidative Stress in Healthy Wistar Rats

2020 ◽  
Vol 2020 ◽  
pp. 1-7 ◽  
Author(s):  
Aryadi Arsyad ◽  
Irfan Idris ◽  
Andi A. Rasyid ◽  
Rezky A. Usman ◽  
Kiki R. Faradillah ◽  
...  
Keyword(s):  
Superoxide Dismutase ◽  
Metabolic Acidosis ◽  
Ketogenic Diet ◽  
Wistar Rats ◽  
Blood Gas ◽  
High Fat ◽  
Carbohydrate Diet ◽  
Low Carbohydrate Diet ◽  
Low Carbohydrate

Background. Ketogenic diet has been used as supportive therapy in a range of conditions including epilepsy, diabetes mellitus, and cancer. Objective. This study aimed to investigate the effects of long-term consumption of ketogenic diet on blood gas, hematological profiles, organ functions, and superoxide dismutase level in a rat model. Materials and Methods. Fifteen male Wistar rats were divided into control (n = 8) and ketogenic (n = 7) groups. Controls received standard diet contained 52.20% of carbohydrates, 7.00% fat, and 15.25% protein; meanwhile, the ketogenic group received a high-fat-low-carbohydrate diet which contained 5.66% of carbohydrate, 86.19% fat, and 8.15% protein. All rats were caged individually and received 30g of either standard or high-fat-low-carbohydrate pellets. The experiment was carried out for 60 days before the blood samples were taken and analyzed to obtain blood gas, cell counts, organ biomarkers, and plasma antioxidant superoxide dismutase (SOD) levels. Results. The rats subjected to ketogenic diet experienced a marked decrease in body weight, blood sugar, and increased blood ketones (p<0.05). The average blood pH was 7.36 ± 0.02 and base excess was −5.57 ± 2.39 mOsm/L, which were significantly lower than controls (p<0.05). Hematological analysis showed significantly lower erythrocyte, hemoglobin, and hematocrit levels. No significant changes were found in alanine aminotransferase, aspartate aminotransferase, urea, and creatinine levels, indicating normal liver and kidney functions. Nevertheless, plasma SOD level significantly reduced with ketogenic diet. Conclusion. Long-term ketogenic diet induces metabolic acidosis, anemia, and reduced antioxidant enzyme level in rats following 60 days of consuming high-fat-low-carbohydrate diet.

scholarly journals Non-diabetic ketoacidosis associated with a low carbohydrate, high fat diet in a postpartum lactating female

2020 ◽  
Vol 2020 (8) ◽  
Author(s):  
Saba Marzban ◽  
Mohamed Arbee ◽  
Naseema Vorajee ◽  
Guy A Richards
Keyword(s):  
High Fat Diet ◽  
The Body ◽  
Diabetic Woman ◽  
High Fat ◽  
Lactating Women ◽  
Balanced Diet ◽  
Low Carbohydrate ◽  
Induce Weight Loss ◽  
Production Requirement

ABSTRACT A 31-year old non-diabetic woman presented to our hospital with symptoms of dehydration, drowsiness, fatigue, shortness of breath and vomiting present for two consecutive days prior to admission. She had started a low carbohydrate, high fat (LCHF) diet to induce weight loss while breastfeeding her 4-month-old child 2 weeks prior to admission. The patient was found to have a severely high anion gap metabolic acidosis. It was determined to be due to ketoacidosis, which was as a result of carbohydrate restriction in the presence of increased metabolic demands related with the synthesis and secretion of milk. She denied alcohol use or ingestion of any drugs prior to admission. The patient underwent dialysis and received insulin, 5% dextrose water alongside a well-balanced diet with adequate calories. All abnormal laboratory results normalized and follow-up visits were done. Lactating women are at risk of developing ketoacidosis due to high metabolic demands of the body to produce milk. LCHF diets may exacerbate the body’s demand to meet its milk production requirement and result in ketoacidosis. Health professionals need to be aware of the complications of LCHF diet in this population to prevent mortality associated with this condition.

Fat-Free Mass Changes During Ketogenic Diets and the Potential Role of Resistance Training

2016 ◽  
Vol 26 (1) ◽  
pp. 78-92 ◽  
Author(s):  
Grant M. Tinsley ◽  
Darryn S. Willoughby
Keyword(s):  
Weight Loss ◽  
Resistance Training ◽  
Ketogenic Diet ◽  
Potential Role ◽  
Mass Measurement ◽  
Fat Free Mass ◽  
Exercise Interventions ◽  
Ketogenic Diets ◽  
Low Carbohydrate

Low-carbohydrate and very-low-carbohydrate diets are often used as weight-loss strategies by exercising individuals and athletes. Very-low-carbohydrate diets can lead to a state of ketosis, in which the concentration of blood ketones (acetoacetate, 3-β-hydroxybutyrate, and acetone) increases as a result of increased fatty acid breakdown and activity of ketogenic enzymes. A potential concern of these ketogenic diets, as with other weight-loss diets, is the potential loss of fat-free mass (e.g., skeletal muscle). On examination of the literature, the majority of studies report decreases in fat-free mass in individuals following a ketogenic diet. However, some confounding factors exist, such as the use of aggressive weight-loss diets and potential concerns with fat-free mass measurement. A limited number of studies have examined combining resistance training with ketogenic diets, and further research is needed to determine whether resistance training can effectively slow or stop the loss of fat-free mass typically seen in individuals following a ketogenic diet. Mechanisms underlying the effects of a ketogenic diet on fat-free mass and the results of implementing exercise interventions in combination with this diet should also be examined.

scholarly journals Overweight and diabetes prevention: is a low-carbohydrate–high-fat diet recommendable?

2018 ◽  
Vol 57 (4) ◽  
pp. 1301-1312 ◽  
Author(s):  
Fred Brouns
Keyword(s):  
Type 2 Diabetes ◽  
Weight Loss ◽  
Carbohydrate Content ◽  
Food Sources ◽  
Long Term Effects ◽  
High Fat ◽  
Functional Changes ◽  
Low Carbohydrate

Abstract In the past, different types of diet with a generally low-carbohydrate content (< 50–< 20 g/day) have been promoted, for weight loss and diabetes, and the effectiveness of a very low dietary carbohydrate content has always been a matter of debate. A significant reduction in the amount of carbohydrates in the diet is usually accompanied by an increase in the amount of fat and to a lesser extent, also protein. Accordingly, using the term “low carb–high fat” (LCHF) diet is most appropriate. Low/very low intakes of carbohydrate food sources may impact on overall diet quality and long-term effects of such drastic diet changes remain at present unknown. This narrative review highlights recent metabolic and clinical outcomes of studies as well as practical feasibility of low LCHF diets. A few relevant observations are as follows: (1) any diet type resulting in reduced energy intake will result in weight loss and related favorable metabolic and functional changes; (2) short-term LCHF studies show both favorable and less desirable effects; (3) sustained adherence to a ketogenic LCHF diet appears to be difficult. A non-ketogenic diet supplying 100–150 g carbohydrate/day, under good control, may be more practical. (4) There is lack of data supporting long-term efficacy, safety and health benefits of LCHF diets. Any recommendation should be judged in this light. (5) Lifestyle intervention in people at high risk of developing type 2 diabetes, while maintaining a relative carbohydrate-rich diet, results in long-term prevention of progression to type 2 diabetes and is generally seen as safe.

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