I don't know why folks love these keto diets....though they do work, they are very restrictive, and not for everyone. Many go through a brain fog for as long as a couple weeks(depends on the person here).
They are waaayyyyy too restrictive for me. I usually end up with a TKD when dieting for a contest, but that is the only time I use one. CKD's I do not function well.
Anyway, research is showing that there is no need to be "miserable" if you are not going to compete.
ORIGINAL RESEARCH COMMUNICATION
Ketogenic low-carbohydrate diets have no metabolic advantage over nonketogenic low-carbohydrate diets1,2,3
Carol S Johnston, Sherrie L Tjonn, Pamela D Swan, Andrea White, Heather Hutchins and Barry Sears
1 From the Department of Nutrition, Arizona State University, Mesa, AZ (CSJ, PDS, and AW); Conscious Cuisine, Scottsdale, AZ (SLT); and Inflammation Research Foundation, Marblehead, MA (HH and BS)
Background:Low-carbohydrate diets may promote greater weight loss than does the conventional low-fat, high-carbohydrate diet.
Objective:We compared weight loss and biomarker change in adults adhering to a ketogenic low-carbohydrate (KLC) diet or a nonketogenic low-carbohydrate (NLC) diet.
Design:Twenty adults [body mass index (in kg/m2): 34.4 ± 1.0] were randomly assigned to the KLC (60% of energy as fat, beginning with 5% of energy as carbohydrate) or NLC (30% of energy as fat; 40% of energy as carbohydrate) diet. During the 6-wk trial, participants were sedentary, and 24-h intakes were strictly controlled.
Results:Mean (±SE) weight losses (6.3 ± 0.6 and 7.2 ± 0.8 kg in KLC and NLC dieters, respectively; P = 0.324) and fat losses (3.4 and 5.5 kg in KLC and NLC dieters, respectively; P = 0.111) did not differ significantly by group after 6 wk. Blood ß-hydroxybutyrate in the KLC dieters was 3.6 times that in the NLC dieters at week 2 (P = 0.018), and LDL cholesterol was directly correlated with blood ß-hydroxybutyrate (r = 0.297, P = 0.025). Overall, insulin sensitivity and resting energy expenditure increased and serum -glutamyltransferase concentrations decreased in both diet groups during the 6-wk trial (P < 0.05). However, inflammatory risk (arachidonic acid:eicosapentaenoic acid ratios in plasma phospholipids) and perceptions of vigor were more adversely affected by the KLC than by the NLC diet.
Conclusions:KLC and NLC diets were equally effective in reducing body weight and insulin resistance, but the KLC diet was associated with several adverse metabolic and emotional effects. The use of ketogenic diets for weight loss is not warranted.