Nurses serve their communities in many ways and have essential roles in healthcare. Nurses promote healthy lifestyles, advocate for patients, provide health education, and directly care for many patients. The exact functions of nurses have changed somewhat over the years; however, their importance in healthcare remains evident. Since the advent of modern medicine, nurses' role has shifted from being comforters to modern healthcare professionals who provide evidence-based treatment and wellness education. Nurses have a multifaceted role as holistic caregivers, patient advocates, specialists, and researchers.