Protein is a vital macronutrient made up of amino acids, the building blocks your body uses to repair tissues, build muscle, support immune function, and regulate hormones and enzymes. Unlike carbs and fats, your body doesn't store protein in the same way, so you need a steady daily intake to keep everything running smoothly. For women in their 40s, protein becomes especially important. It helps preserve lean muscle, boost metabolism, and maintain strength and energy, all of which naturally decline with age. Getting enough protein also supports bone health, skin elasticity, and recovery from stress or illness.
