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Diabetes Mellitus Risk Factors Explained

Discover the key risk factors for diabetes mellitus, including genetics, lifestyle, and diet. Learn how to reduce your risk with practical, expert-backed prevention tips.

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Written by Dr. Vasanthasree Nair

Reviewed by Dr. Rohinipriyanka Pondugula MBBS

Last updated on 22nd Jul, 2025

Introduction 

Living a healthy life starts with understanding the risks that can affect your well-being. One such condition that affects millions worldwide is diabetes mellitus, a chronic disease that impacts how your body processes blood sugar (glucose). While diabetes can be managed effectively, knowing its risk factors can help you take preventive steps early.

In this article, we’ll explore the key risk factors for diabetes mellitus, how they affect your health, and what you can do to lower your chances of developing this condition.

What is Diabetes Mellitus?

Diabetes mellitus is a condition where the body either doesn’t produce enough insulin (a hormone that regulates blood sugar) or cannot use insulin effectively. This leads to high blood sugar levels, which, if left uncontrolled, can cause serious health complications like heart disease, kidney damage, nerve problems, and vision loss.

There are two main types of diabetes:

1. Type 1 Diabetes: An autoimmune condition where the body attacks insulin-producing cells. It usually develops in childhood or young adulthood.

2. Type 2 Diabetes: The more common type, where the body becomes resistant to insulin or doesn’t produce enough. It is often linked to lifestyle factors.

While Type 1 diabetes is mostly genetic, Type 2 diabetes is largely influenced by modifiable risk factors.

Key Risk Factors for Diabetes Mellitus

These are the key factors for diabetes mellitus:

1. Family History & Genetics

If your parents or siblings have diabetes, your risk increases. Genetics play a role in how your body processes insulin.

2. Being Overweight or Obese

Excess body fat, especially around the abdomen, makes it harder for insulin to work effectively. Losing even 5-10% of body weight can significantly reduce diabetes risk.

3. Lack of Physical Activity

A sedentary lifestyle slows down metabolism and increases insulin resistance. Regular exercise (30 minutes a day) helps maintain healthy blood sugar levels.

4. Unhealthy Diet

A diet high in sugary drinks, processed foods, and unhealthy fats contributes to weight gain and insulin resistance. Instead, focus on:

  • Whole grains

  • Fresh fruits & vegetables

  • Lean proteins (fish, chicken, beans)

  • Healthy fats (nuts, olive oil)

5. Age (Over 45 Years)

As we age, the risk of Type 2 diabetes increases due to reduced physical activity, muscle loss, and slower metabolism.

6. High Blood Pressure & Cholesterol

These conditions strain the body’s ability to regulate blood sugar and increase diabetes risk.

7. Gestational Diabetes (During Pregnancy)

Women who develop diabetes during pregnancy have a higher risk of Type 2 diabetes later in life. Their children may also be at risk.

8. Polycystic Ovary Syndrome (PCOS)

Women with PCOS often have insulin resistance, increasing their diabetes risk.

9. Smoking & Excessive Alcohol

Both habits worsen insulin resistance and contribute to weight gain.

Get Your Symptoms Checked By An Endocrinologist

Dr. Anand Ravi, General Physician

Dr. Anand Ravi

General Physician

2 Years • MBBS

Bengaluru

PRESTIGE SHANTHINIKETAN - SOCIETY CLINIC, Bengaluru

400

Dr Sumanth R, General Physician

Dr Sumanth R

General Physician

2 Years • MBBS

Bengaluru

PRESTIGE SHANTHINIKETAN - SOCIETY CLINIC, Bengaluru

400

Dr. Chaithanya R, Internal Medicine Specialist Diabetologist

Dr. Chaithanya R

Internal Medicine Specialist Diabetologist

16 Years • MBBS, MD Internal Medicine, Fellowship in Diabetes(UK), CCEBDM(PHFI)

Bangalore

Apollo Clinic Bellandur, Bangalore

recommendation

81%

(50+ Patients)

1000

Dr. Nanda N, Endocrinologist

Dr. Nanda N

Endocrinologist

11 Years • MBBS, MD (Paediatrics) (Gold medallist), DrNB (Endocrinology & metabolism), PDCC (Paediatric Endocrinology) (AIIMS)

Bengaluru

Apollo Medical Center, Marathahalli, Bengaluru

900

Dr. Mary Susan K S, General Physician/ Internal Medicine Specialist

Dr. Mary Susan K S

General Physician/ Internal Medicine Specialist

13 Years • MBBS, MD INTERNAL MEDICINE

Bengaluru

Apollo Clinic, Sarjapur Road, Bengaluru

800

800

No Booking Fees

10. Ethnicity

People of South Asian, African, Hispanic, and Native American descent have a higher genetic predisposition to diabetes.

How to Lower Your Risk of Diabetes

The good news? Type 2 diabetes is largely preventable with healthy lifestyle choices! Here’s what you can do:

  • Maintain a Healthy Weight: Even small weight loss helps.

  • Stay Active: Walk, cycle, or do yoga daily.

  • Eat a Balanced Diet: Avoid sugary and processed foods.

  • Get Regular Check-ups: Monitor blood sugar, cholesterol, and blood pressure.

  • Quit Smoking & Limit Alcohol: Reduces insulin resistance.

  • Manage Stress: High stress raises blood sugar levels.

When to See a Doctor?

If you experience symptoms like:

  • Frequent urination

  • Excessive thirst

  • Unexplained weight loss

  • Fatigue

  • Blurred vision

It’s important to get tested. Early detection can prevent complications.

Apollo 24|7 offers diabetes screening tests and expert consultations to help you monitor and manage your health effectively.

Conclusion 

Understanding diabetes risk factors empowers you to take control of your health. By making simple lifestyle changes, you can significantly reduce your chances of developing diabetes and lead a healthier, happier life.

If you have concerns about diabetes, don’t hesitate to reach out to a healthcare professional.

Would you like personalized advice? Schedule a consultation with Apollo 24|7 today!

Get Your Symptoms Checked By An Endocrinologist

Dr. Anand Ravi, General Physician

Dr. Anand Ravi

General Physician

2 Years • MBBS

Bengaluru

PRESTIGE SHANTHINIKETAN - SOCIETY CLINIC, Bengaluru

400

Dr Sumanth R, General Physician

Dr Sumanth R

General Physician

2 Years • MBBS

Bengaluru

PRESTIGE SHANTHINIKETAN - SOCIETY CLINIC, Bengaluru

400

Dr. Chaithanya R, Internal Medicine Specialist Diabetologist

Dr. Chaithanya R

Internal Medicine Specialist Diabetologist

16 Years • MBBS, MD Internal Medicine, Fellowship in Diabetes(UK), CCEBDM(PHFI)

Bangalore

Apollo Clinic Bellandur, Bangalore

recommendation

81%

(50+ Patients)

1000

Dr. Nanda N, Endocrinologist

Dr. Nanda N

Endocrinologist

11 Years • MBBS, MD (Paediatrics) (Gold medallist), DrNB (Endocrinology & metabolism), PDCC (Paediatric Endocrinology) (AIIMS)

Bengaluru

Apollo Medical Center, Marathahalli, Bengaluru

900

Dr. Mary Susan K S, General Physician/ Internal Medicine Specialist

Dr. Mary Susan K S

General Physician/ Internal Medicine Specialist

13 Years • MBBS, MD INTERNAL MEDICINE

Bengaluru

Apollo Clinic, Sarjapur Road, Bengaluru

800

800

No Booking Fees

Get Your Symptoms Checked By An Endocrinologist

Dr. Anand Ravi, General Physician

Dr. Anand Ravi

General Physician

2 Years • MBBS

Bengaluru

PRESTIGE SHANTHINIKETAN - SOCIETY CLINIC, Bengaluru

400

Dr Sumanth R, General Physician

Dr Sumanth R

General Physician

2 Years • MBBS

Bengaluru

PRESTIGE SHANTHINIKETAN - SOCIETY CLINIC, Bengaluru

400

Dr. Chaithanya R, Internal Medicine Specialist Diabetologist

Dr. Chaithanya R

Internal Medicine Specialist Diabetologist

16 Years • MBBS, MD Internal Medicine, Fellowship in Diabetes(UK), CCEBDM(PHFI)

Bangalore

Apollo Clinic Bellandur, Bangalore

recommendation

81%

(50+ Patients)

1000

Dr. Nanda N, Endocrinologist

Dr. Nanda N

Endocrinologist

11 Years • MBBS, MD (Paediatrics) (Gold medallist), DrNB (Endocrinology & metabolism), PDCC (Paediatric Endocrinology) (AIIMS)

Bengaluru

Apollo Medical Center, Marathahalli, Bengaluru

900

Dr. Mary Susan K S, General Physician/ Internal Medicine Specialist

Dr. Mary Susan K S

General Physician/ Internal Medicine Specialist

13 Years • MBBS, MD INTERNAL MEDICINE

Bengaluru

Apollo Clinic, Sarjapur Road, Bengaluru

800

800

No Booking Fees

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