BMI Calculator & Related Health Factors
Underweight
BMI less than 18.5
Normal
BMI 18.5–24.9
Overweight
BMI 25–29.9
Obese
BMI 30+
(BMI less than 18.5)
Possible Health Factors
- Increased risk of malnutrition, vitamin deficiencies, and anemia.
- Higher susceptibility to osteoporosis and fractures.
- Weakened immune system, leading to a higher risk of infections.
- Potential fertility issues.
- Increased risk of surgical complications.
(BMI 18.5–24.9)
Possible Health Factors
- Generally associated with the lowest risk of cardiovascular diseases, diabetes, and other chronic conditions.
- Maintaining a normal weight reduces the risk of developing hypertension and dyslipidemia.
- Supports overall well-being and physical fitness.
(BMI 25–29.9)
Possible Health Factors
- Increased risk of developing cardiovascular diseases such as heart disease and stroke.
- Higher likelihood of developing type 2 diabetes.
- Greater risk of hypertension (high blood pressure).
- Elevated risk of certain cancers, including breast, colon, and kidney cancer.
- Risk of osteoarthritis due to extra weight putting pressure on joints.
(BMI of 30 or greater)
Possible Health Factors
Class I (BMI 30–34.9)
- Significantly higher risk of heart disease, type 2 diabetes, and hypertension.
- Increased likelihood of developing metabolic syndrome, a cluster of conditions that increase the risk of heart disease, stroke, and diabetes.
- Greater risk of respiratory problems, such as sleep apnea and asthma.
- Higher incidence of joint and musculoskeletal issues, including osteoarthritis.
- Increased risk of various cancers, such as endometrial, breast, and liver cancer.
Class II (BMI 35–39.9)
- Further elevated risk of cardiovascular diseases and diabetes.
- Higher probability of developing severe sleep apnea and other respiratory disorders.
- Increased risk of severe osteoarthritis and joint problems.
- Greater likelihood of experiencing gallbladder disease and gastroesophageal reflux disease (GERD).
- Elevated risk of psychological issues, including depression and anxiety.
Class III (BMI 40 or higher)
- Extreme risk of cardiovascular diseases, including heart attacks and stroke.
- Very high risk of type 2 diabetes and its complications, such as kidney disease and nerve damage.
- Severe sleep apnea and other respiratory problems are common.
- High incidence of severe joint and mobility issues, often leading to disability.
- Increased risk of liver disease, including fatty liver disease and cirrhosis.
- Greater likelihood of experiencing psychological and social challenges, including stigma and discrimination.
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