הנה משהו "מוסמך" לכל המקצצים למיניהם:
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.
המסקנה אומרת שזה יכול לעזור נפשית וגם>>זהו בגדול
זה יכול לעזור לאנשים שקשה להם לשלוט על כמות הקלוריות ונסחפים בעת אכילה מרובה של פחמימות, אבל לא יותר מזה.כל זה נאמר על אנשים בשנמצאים באחוזי שומן רגילים ולא נמוכים...
למשל מישהו על 14-20 אחוז שומןנגיד, לא יפיק שום תועלת מזה ,חוץ מהורדה של כמה קילו נוזלים (שסתם ישלה אותו ויגרום לו להרגיש כאילו באמת שרף משהו).
בכל מקרה, מה שאני תמיד אומר פה שההבדל בפחמימות יכול להיות רלוונטי רק בדל -לא דל וגם רק לאנשים באחוזי שומן נמוכים...
200 גרם פחמימה או 400 לא ישנו ...(כמובן אם בשניהם החלבון זהה)
תגובה של לייל מקדונלד :
For many individuals,
the biggest ‘metabolic advantage’ of very-low carbohdyrate diets may be one of
food/calorie control. Many people seem to show what might be popularly called ‘carbohydrate addiction’ (a term that is massively debated among obesity researchers) where eating even small amounts of carbs makes them want to eat more. In that case, a full blown removal of carbohydrates from the diet may be the only realistic way to limit caloric intake.
Related to this, for many, spending time on a very-low carbohydrate diet seems to change taste preferences: carbohydrates can often be reintroduced after some period without the loss of food control that occurred prior to the diet.
I mentioned in the introduction that
severely insulin resistant individual seem to get health benefits from extreme
carbohydrate restriction.
For leaner dieters, as I discuss in both The Ultimate Diet 2.0 and The Stubborn Fat Solution, extreme carbohydrate restriction
tends to help with stubborn lower body fat mobilization.
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