Published Oct 3, 2025 4 Min Read

Overview

Health insurance is a critical safety net, offering financial protection against unforeseen medical expenses. However, securing a policy often involves a meticulous evaluation process known as underwriting. Among several factors considered during underwriting, Body Mass Index (BMI) plays a pivotal role in determining eligibility, premiums, and coverage terms. [KE1] Let’s delve into why BMI matters in health insurance underwriting, its impact on your policy, and actionable insights to maintain a healthy BMI for better insurance outcomes.


Role of BMI in health insurance underwriting


BMI, or Body Mass Index, is a widely used metric for assessing an individual's body fat based on their height and weight. It is calculated using the formula:

BMI = Weight (kg) / Height² (m²)

Health insurance companies leverage BMI as a key indicator of overall health and potential medical risks. A higher BMI is often associated with conditions like diabetes, hypertension, and cardiovascular diseases, which can lead to increased healthcare costs. Conversely, a lower BMI may indicate good health, potentially lowering the risk for insurers.

Bajaj Finserv app provides a user-friendly platform for comparing health insurance plans tailored to your health profile. With premiums starting at Rs. 9.3/day#, coverage options ranging from Rs. 10 lakh to Rs. 50 lakh, and cashless treatments at over 10,000+ hospitals, explore policies that align with your BMI and health needs. 


T&C Apply. #Insurance premium indicated is for healthy male aged 18 years and is exclusive of tax.

How insurers use BMI in underwriting decisions

During the underwriting process, health insurers assess your BMI to determine the likelihood of future medical claims. Here is how BMI influences underwriting decisions:


  • Risk assessment: Insurers categorise applicants into risk groups based on their BMI. A normal BMI (18.5–24.9) is generally considered low-risk, while higher BMI levels (over 30) may signal elevated health risks.
  • Premium calculation: Individuals with high BMI levels often face higher premiums as insurers anticipate increased healthcare costs due to obesity-related conditions. On the other hand, a healthy BMI may lead to more affordable premiums.
  • Policy approval: Extreme BMI values—whether too high or too low—could lead to outright rejection of a health insurance application, especially if they are indicative of serious underlying health issues.

Comparing health insurance plans allows you to identify policies that best suit your health profile. With features like pre-existing disease coverage and tax benefits under Section 80D, you can secure comprehensive protection. Take the next step—explore and compare health insurance plans online to find the right fit for your needs.

Impact of BMI on health insurance

BMI directly influences several aspects of health insurance, including:


  1. Premiums: A higher BMI often results in higher premiums due to the increased likelihood of medical claims. For example, individuals with obesity are more prone to chronic conditions like Type 2 diabetes, which may require ongoing treatment and medication.
  2. Coverage limitations: Some insurers may impose restrictions on coverage for conditions linked to high BMI, such as joint problems or cardiovascular diseases, or exclude them altogether.
  3. Policy eligibility: Applicants with extremely high or low BMI may face challenges in securing health insurance, as these values could indicate severe health risks or malnutrition.

To mitigate these impacts, comparing health insurance plans with wellness benefits can help you make healthier choices and reduce costs. By maintaining a balanced BMI, you may qualify for policies with better terms and lower premiums. Start today—explore health insurance plans that reward your healthy lifestyle.

Is Your BMI Level Enough for Buying Health Insurance?, Why Maintaining a Healthy BMI is Important?

While BMI is an important factor, it is not the sole determinant of health insurance eligibility. Insurers also consider other aspects like age, medical history, lifestyle habits, and pre-existing conditions. However, maintaining a healthy BMI can significantly improve your chances of securing affordable and comprehensive coverage.

For instance, many digital platforms offer health insurance plans for individuals aged 18–65 years, with coverage options up to Rs. 50 lakh. Whether you need individual, family, maternity, or critical illness coverage, you can easily compare policies that align with your BMI and overall health status.


Why maintaining a healthy BMI is important

A healthy BMI is not just beneficial for securing better health insurance terms; it also plays a crucial role in your overall well-being. Here are some advantages of maintaining a balanced BMI:

  • Reduced health risks: A normal BMI lowers the risk of chronic conditions like diabetes, hypertension, and heart disease, ensuring a healthier lifestyle.
  • Lower insurance premiums: By maintaining a healthy BMI, you can reduce your insurance premiums, as insurers perceive you as a lower-risk applicant.
  • Improved eligibility: A balanced BMI enhances your chances of policy approval, enabling you to access comprehensive coverage without restrictions.

Using a BMI calculator is a practical way to monitor your health status and adopt healthier habits, helping you check premium for health insurance plans with favourable terms.


Conclusion

BMI is a crucial factor in health insurance underwriting, influencing premiums, coverage, and eligibility. While a high BMI may pose challenges, maintaining a healthy BMI can improve your chances of securing affordable and comprehensive coverage. You can check premium for health insurance plans with coverage up to ₹50 lakh and cashless treatment at thousands of hospitals.

Take charge of your health and insurance needs by using a BMI calculator, adopting healthier habits, and exploring policies tailored to your profile. Compare leading health insurance plans on Bajaj Finserv app today and secure your financial future with confidence.

Frequently asked questions

Why do health insurance companies consider BMI during underwriting

Health insurance companies use BMI as an indicator of overall health and potential medical risks. A higher BMI is often associated with conditions like diabetes and hypertension, which can lead to increased healthcare costs. By assessing BMI, insurers can categorise applicants into risk groups and determine premiums accordingly.

How does BMI affect my health insurance premium

BMI directly impacts your premium rates. Individuals with high BMI levels may face higher premiums due to the increased likelihood of obesity-related health conditions. Conversely, a healthy BMI can result in lower premiums, as insurers perceive such applicants as low-risk.

Can a high BMI lead to rejection of a health insurance application

Yes, a high BMI can lead to the rejection of a health insurance application, particularly if it indicates severe health risks or chronic conditions. However, Bajaj Finserv’s platform allows you to compare policies from leading insurers, ensuring you find a plan that suits your health profile.

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Disclaimer

*T&C Apply. Bajaj Finance Limited (‘BFL’) is a registered corporate agent of third party insurance products of Bajaj Life Insurance Limited (Formerly known as Bajaj Allianz Life Insurance Company Limited), HDFC Life Insurance Company Limited, Life Insurance Corporation of India (LIC), Bajaj General Insurance Limited(Formerly known as Bajaj Allianz General Insurance Company Limited), SBI General Insurance Company Limited, ACKO General Insurance Company Limited, HDFC ERGO General Insurance Company, TATA AIG General Insurance Company Limited, ICICI Lombard General Insurance Company Limited, New India Assurance Limited, Chola MS General Insurance Company Limited, Zurich Kotak General Insurance Company Limited, Star Health & Allied Insurance Company Limited, Care Health Insurance Company Limited, Niva Bupa Health Insurance Company Limited, Aditya Birla Health Insurance Company Limited and Manipal Cigna Health Insurance Company Limited under the IRDAI composite registration number CA0101. Please note that, BFL does not underwrite the risk or act as an insurer. Your purchase of an insurance product is purely on a voluntary basis after your exercise of an independent due diligence on the suitability, viability of any insurance product. Any decision to purchase insurance product is solely at your own risk and responsibility and BFL shall not be liable for any loss or damage that any person may suffer, whether directly or indirectly. For more details on risk factors, terms and conditions and exclusions please read the product sales brochure & policy wordings carefully before concluding a sale. Tax benefits applicable if any, will be as per the prevailing tax laws. Tax laws are subject to change. BFL does NOT provide Tax/Investment advisory services. Please consult your advisors before proceeding to purchase an insurance product. Visitors are hereby informed that their information submitted on the website may also be shared with insurers. BFL is also distributor of other third party products from Assistance service providers such as CPP Assistance Services Private Limited, Bajaj Finserv Health Limited. etc. All product information such as premium, benefits, exclusions, value added services etc. are authentic and solely based on the information received from the respective Insurance company or the respective Assistance provider company.

Note- While we have made all the efforts and taken utmost care in gathering precise information about the products, features, benefits etc. However, BFL cannot be held liable for any direct or indirect damage/loss. We request our customers to conduct their research about these products and refer to the respective products sales brochure and policy/membership wordings before concluding sales.