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© 2026 NutriFit. All rights reserved.V1.0.2348 · 2025–2026

Nutrition and metabolism

Categories
Knowledge · Nutrition

Glycemic Index and Load: Understanding Numbers and Food Selection

The glycemic index compares the response to the same amount of available carbohydrates, while the load accounts for serving size. We explain the methodology, food structure, individual variability, and results from human studies without arbitrary restrictions based on a single number.

September 2, 2026
Knowledge · Nutrition

Sodium and Salt: Kidneys, Blood Pressure, and Balanced Nutrition

How sodium maintains water-electrolyte balance, why blood pressure changes with salt intake, and what the DASH-Sodium and SSaSS studies revealed. Detailed information on RAAS, salt sensitivity, WHO guidelines, food labels, potassium-enriched salt substitutes, and situations requiring individual medical decisions.

September 2, 2026
Knowledge · Nutrition

Free Sugars: Fructose, Diet, and Real Risks

How free sugars differ from total and added sugars, why whole fruits and juices are not equivalent, and what trials on fructose and sugary drinks have shown. WHO guidelines, dental caries, labeling, and safe practical changes.

September 2, 2026
Knowledge · Nutrition

Dietary Fats: Quality, Substitution, and Omega-6 Myths

Understanding the differences between saturated, unsaturated, and trans fats, how to substitute them, and what human trials reveal. Addressing Omega-6, the limitations of the universal ratio, dietary vs. pharmacological Omega-3, and guidance on portions and safety.

September 2, 2026
Knowledge · Nutrition

Protein in the Body: Daily Intake, Muscle Growth, and Kidney Health

How amino acids participate in tissue regeneration and why requirements depend on individual goals. A review of resistance training studies, portion distribution, protein quality, plant-based nutrition, and differences between healthy individuals and those with chronic kidney disease.

September 2, 2026
Knowledge · Nutrition

Electrolytes and hydration: water, losses, and safety

How sodium, potassium, and water are distributed in the body, what EFSA guidelines mean, when a sports plan is necessary, and why ORS addresses a specific medical task. Human research and risks associated with kidney disease, medications, and excessive drinking.

September 2, 2026