Próteíninu

Próteíninu is a fundamental macronutrient essential for life. It is composed of amino acids, which are often referred to as the building blocks of proteins. These amino acids link together in long chains to form various protein structures, each with a specific function. The sequence and arrangement of these amino acids determine the protein's unique three-dimensional shape and, consequently, its role in the body.

Proteins play a vast array of critical roles. They are vital for building and repairing tissues, including muscles, bones, and skin. They also act as enzymes, catalyzing biochemical reactions that are necessary for metabolism. Furthermore, proteins function as antibodies, defending the body against infections, and as hormones, regulating bodily processes. They are also involved in transporting molecules, such as oxygen, throughout the body.

Dietary sources of protein are diverse and include both animal and plant-based foods. Animal sources like meat, poultry, fish, eggs, and dairy products are considered complete proteins, meaning they contain all nine essential amino acids that the human body cannot produce on its own. Plant-based sources such as legumes, nuts, seeds, and grains can also provide protein, though some may be incomplete and require combining different sources to ensure adequate intake of all essential amino acids. The recommended daily intake of protein varies based on age, activity level, and overall health.