Underweight refers to a body weight that is considered too low for a person's height, specifically indicated by a body mass index (BMI) of less than 18.5. BMI is a number calculated from a person's weight and height. Being underweight can be a sign of inadequate nutrition or underlying health issues, and it can affect individuals of any age or gender.
Being underweight is important for health because it can lead to various health complications. People who are underweight may have weakened immune systems, making them more susceptible to infections. They may also experience issues such as fatigue, hair loss, and irregular menstruation in women. Additionally, being underweight can affect growth and development in children and adolescents, which can have long-term consequences.
In the body, proper weight is essential for various functions, including hormone production, energy levels, and overall physical health. When someone is underweight, they may not be consuming enough calories or nutrients, which can result in a lack of energy and insufficient support for vital bodily functions. Maintaining a healthy weight helps ensure that the body has the necessary resources to operate efficiently.
It is important to note that being underweight is not always a choice; some people may have medical conditions that contribute to low body weight. If someone is concerned about being underweight, it is advisable to consult a healthcare professional for guidance and support.