Psychological stress is the body's response to demands or pressures that are placed upon it. It can be triggered by various factors, both internal (such as fears or worries) and external (such as work or relationship issues). When a person is under stress, their body releases hormones like adrenaline and cortisol, which can have both physical and emotional effects. Chronic stress can lead to negative consequences on a person's health, including increased risk of mental health disorders, heart disease, and other chronic conditions. Researchers study psychological stress to better understand its causes, effects, and ways to manage it effectively. This area of research helps inform interventions and strategies for stress reduction and improving overall well-being.