Low-carbohydrate diets: nutritional and physiological aspects.

Area of Science:

• Nutrition Science
• Metabolic Health
• Dietary Interventions

Background:

• Growing international interest in low-carbohydrate diets driven by WHO recommendations.
• Low-carbohydrate diets induce ketosis, increasing fatty acid oxidation for energy.
• Metabolic shifts include reduced insulin and glucose levels, promoting fat oxidation.

Purpose of the Study:

• To review the acute effects of low-carbohydrate diets.
• To identify both favorable and unfavorable metabolic changes.
• To explore potential modifications for long-term health and sustainability.

Main Methods:

• Literature review of existing scientific studies on low-carbohydrate diets.
• Analysis of reported metabolic and physiological changes.
• Comparison of different low-carbohydrate diet compositions.

Main Results:

• Acute benefits include rapid weight loss, decreased fasting glucose and insulin, reduced triglycerides, and improved blood pressure.
• Potential adverse effects comprise lean body mass loss, increased urinary calcium and homocysteine, and elevated LDL cholesterol.
• A low-carbohydrate, high-protein, low-fat diet may mitigate some negative effects.

Conclusions:

• Low-carbohydrate diets offer short-term metabolic advantages but have potential drawbacks.
• Long-term effects of sustained high fat intake require further investigation.
• Hypocaloric, low-carbohydrate diets with adequate protein and controlled fat show promise for body composition and metabolic health.