toitainete

Toitainete is the Estonian term for nutrients—substances in foods that the body needs to function, grow, heal, and regulate metabolism. They include substances that must be obtained from the diet (essential nutrients) and those the body can synthesize in sufficient amounts (non-essential nutrients). Nutrients are commonly divided into macronutrients and micronutrients.

Macronutrients are required in larger amounts and provide energy or serve structural roles. They include carbohydrates, proteins, fats, and water. Carbohydrates and proteins supply about 4 kilocalories per gram, fats about 9 kilocalories per gram, while water provides hydration without calories. These macronutrients support energy, tissue maintenance, and bodily processes.

Micronutrients are needed in smaller amounts and include vitamins and minerals. Vitamins act as coenzymes and regulators of metabolism; minerals serve structural roles, electrolyte balance, and various enzymatic functions. Vitamins are categorized as fat-soluble (A, D, E, K) and water-soluble (the B-complex vitamins and vitamin C). Minerals are grouped into major minerals (such as calcium, phosphorus, potassium, magnesium, and sulfur) and trace minerals (such as iron, zinc, iodine, selenium, copper, manganese, and fluoride).

Nutrient availability and absorption depend on factors like age, health status, gut function, and food combinations. Processing and cooking can alter nutrient content, sometimes reducing and other times enhancing bioavailability. Public health efforts focus on promoting a varied diet, fortification, and sensible supplementation to prevent deficiencies and support optimal health.

In summary, toitainete encompass a broad range of dietary components essential for energy, growth, and homeostasis, with distinct roles and dietary requirements.