La nutrición es la ingesta de alimentos en relación con las necesidades dietéticas del organismo. Una buena nutrición (una dieta suficiente y equilibrada combinada con el ejercicio físico regular) es un elemento fundamental de la buena salud.
Una mala nutrición puede reducir la inmunidad, aumentar la vulnerabilidad a las enfermedades, alterar el desarrollo físico y mental, y reducir la productividad.
Kinds of nutrients
Fat: Although fats have fecived a bad reputation for cousing weigh gain, some fat is essential for survival. Acordin to the dietary reference intakes published by the USDA 20%-35% of calories should come from fat.We need fat for: -Normal growth and development
-Energy
-Vitamines A,D,E,K and carotenoids
Proteines:
According to the Dietary Reference Intakes published by the USDA, 10%-35% of caloríes should come from protein.
Most Americans get plenty of protein, and eaisily meet.
This need be consuming a balanced diet.
We need protein for: -Growth
-Preserving tean muscle mass
-Inmune fuction
-Making essential hormones and enzymes
Carbohydrates:
Carbohydrates are the macronutrients that we need in the largest amounts. According to the Dietary Reference Intakes published by the USDA, 45%-65% of caloríes should come for carbohydrate: we need this amount of carbohyfrates for: -Energy
-Central Nervious Sistem
-Fuel
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