Research
Hormonal
Low carbohydrate diets induce rapid short-term weight loss partly through ketosis (suppressing appetite via ketone bodies) and diuresis (water loss from glycogen depletion), but may increase LDL cholesterol and reduce diet quality due to low fiber intake.
Low carbohydrate diets can lead to rapid initial weight loss due to water loss and appetite suppression from ketones, but long-term adherence is hard and may raise LDL cholesterol. Ensure you get enough fiber from non-starchy vegetables to protect gut health.
ModerateQualifiesMEDIUM confidence
The drop of insulin levels that follows a low carbohydrate intake reverses the inhibition of the hormone lipase and increases the breakdown of fat from adipose tissue and the formation of ketone bodies in the liver... Another mechanism by which low carbohydrate diets might induce rapid weight loss is diuresis as a consequence of glycogen depletion since 1 g of glycogen is associated with 3 g of water [84].
Why this rating
Evidence is mixed regarding long-term weight loss and lipid profiles; some studies show benefit, others show risk.
Source
Dietary Management of Obesity: A Review of the Evidence
Nahla Hwalla et al. · Diagnostics · 2020
DOI 10.3390/diagnostics11010024
narrative_reviewCited 59×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
More from this paper
- Energy-restricted diets result in modest long-term weight loss (approx. 3% maintained at 5 years) and high relapse rates (>80%) due to compensatory metabolic adaptations including increased hunger hormones (ghrelin), decreased satiety hormones (leptin, GLP-1, PYY), and reduced energy expenditure.Good
- High protein diets increase satiety and preserve fat-free mass during weight loss through increased anorexigenic hormones (GLP-1, PYY, CCK), decreased orexigenic hormones (ghrelin), and higher diet-induced thermogenesis, though long-term satiety benefits may diminish due to adaptation.Good
- Population-wide fiscal measures, such as taxes on sugar-sweetened beverages and unhealthy foods, can reduce purchases of taxed items and prevent childhood obesity cases, though their immediate impact on population health outcomes is limited and requires sustained implementation.Moderate
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