Relationship between loneliness, psychiatric disorders and physical health ? A review on the psychological aspects of loneliness.

Human beings are social species which require safe and secure social surroundings to survive. Satisfying social relationships are essential for mental and physical well beings. Impaired social relationship can lead to loneliness. Since the time of dawn, loneliness is perceived as a global human phenomenon. Loneliness can lead to various psychiatric disorders like depression, alcohol abuse, child abuse, sleep problems, personality disorders and Alzheimer's disease. It also leads to various physical disorders like diabetes, autoimmune disorders like rheumatoid arthritis, lupus and cardiovascular diseases like coronary heart disease, hypertension (HTN), obesity, physiological aging, cancer, poor hearing and poor health. Left untended, loneliness can have serious consequences for mental and physical health of people. Therefore it is important to intervene at the right time to prevent loneliness, so that physical and mental health of patients is maintained.