Obesity
Body System: Endocrine & Metabolic System | Area Affected: Thyroid, pancreas, adrenals, and metabolic pathways
Doctor to Consult: Endocrinologist
What It Is
Obesity: Obesity is a medical condition, considered a disease by multiple organizations, in which excess body fat has accumulated to such an extent that it can have negative effects on health. People are classified as obese when their body mass index (BMI)—a person's weight divided by the square of the person's height—is over 30 kg/m2; the range 25–30 kg/m2 is defined as overweight. Some East Asian countries use lower BMI thresholds to define obesity. Obesity is a major cause of disability and is correlated with various diseases and conditions, particularly cardiovascular diseases, type 2 diabetes, obstructive sleep apnea, certain types of cancer, and osteoarthritis.
Why It Happens
Obesity arises due to factors affecting the Endocrine & Metabolic System. Metabolic and endocrine conditions arise from hormonal imbalances, insulin resistance, or dysfunction of glands that regulate metabolism. While individual cases vary, a combination of genetic susceptibility, lifestyle factors, and environmental exposures typically contribute to the development of Obesity.
Who Gets It / Risk Factors
Who Is at Risk for Obesity
Prevalence varies by age and gender, with many metabolic conditions becoming more common with advancing age or hormonal transitions.
A family history of endocrine & metabolic system conditions may increase susceptibility to Obesity.
Contributing Factors
Sedentary lifestyle, excess caloric intake, family history of diabetes or thyroid disease, and chronic stress.
Co-existing health conditions such as obesity, cardiovascular disease, or polycystic ovary syndrome may compound the risk.
When to Seek Emergency Care
Diabetic ketoacidosis symptoms, thyroid storm, severe hypoglycemia, or adrenal crisis linked to Obesity.
Sudden or rapidly worsening symptoms that impair basic daily function.
Difficulty breathing, severe pain, loss of consciousness, or high fever with confusion.
Medical Overview
A professional summary of diagnosis, treatment, and prevention.
Unexplained weight changes, fatigue, or temperature sensitivity that may signal Obesity.
Changes in appetite, mood disturbances, or abnormal thirst and urination related to Obesity.
Changes in daily functioning or comfort levels that persist beyond a few days.
Scientific References
This content is based on established clinical guidelines and public health resources from the following authoritative sources.
Medically Reviewed for Accuracy
Medical Advisory Board
•Last reviewed: March 20, 2026Content is aligned with established clinical guidelines from authoritative medical institutions, including MedlinePlus (U.S. National Library of Medicine), the CDC, the NIH, and the NHS. All content is reviewed by our medical advisory board for accuracy and safety.