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Callum Parker
December 11, 2025

Understanding the Different Types of Fat in the Body

Learn about the different types of body fat, how they affect health, and why DEXA Scan data is the most accurate way to measure and track them.

Author
5 min read
Understanding the Different Types of Fat in the Body

Most people think of body fat as one single thing, but your body stores several different types of fat, and each plays a very different role in your health. Some types of fat are protective and necessary. Others increase your risk of disease and impact your energy, hormones, and longevity.

At Kalos, our DEXA Scan technology gives clients clear insight into their fat distribution, including how much fat they carry and where it is stored. This is essential for understanding real health risks and tracking long term improvements.

Here is a clear explanation of the different types of fat in the body and why they matter.

The Main Types of Body Fat

There are four primary types of fat stored in the human body:

1. Subcutaneous Fat

This is the fat located directly under your skin. It is the soft fat you can pinch on your stomach, thighs, or arms.

Key facts:

  • It is not as dangerous as visceral fat
  • It helps regulate temperature
  • It provides cushioning and insulation
  • It changes slowly with diet and exercise

Subcutaneous fat is often what people want to reduce for aesthetic reasons.

2. Visceral Fat

Visceral fat surrounds your internal organs such as the liver, pancreas, and intestines.

It is the most dangerous type of fat for long term health.

High visceral fat is linked to:

  • Heart disease
  • Type 2 diabetes
  • Stroke
  • Insulin resistance
  • Inflammation
  • Metabolic disorders
  • Hormonal imbalances

Visceral fat is particularly important to track because it can be high even in people who appear slim.

A DEXA Scan is the most accurate way to measure it.

3. Essential Fat

Essential fat is necessary for survival and is found in:

  • Hormone producing tissues
  • Brain and nerves
  • Bone marrow
  • Cell membranes

Women naturally carry more essential fat due to reproductive functions.

Too little essential fat leads to:

  • Hormonal disruption
  • Poor immune function
  • Fatigue
  • Impaired focus and mood

Essential fat should never be reduced below healthy ranges.

4. Brown Fat (Brown Adipose Tissue)

Brown fat is a metabolically active type of fat that helps regulate temperature and burn calories.

Key facts:

  • More common in infants
  • Adults retain small amounts
  • Helps increase calorie expenditure
  • Activated by cold exposure

People with slightly higher levels of brown fat often have healthier metabolic profiles.

How Your Body Stores Fat

Your body stores fat based on:

  • Genetics
  • Hormones
  • Stress levels
  • Sleep quality
  • Diet
  • Activity levels
  • Age

Understanding the types of fat and how they behave helps you design a better strategy for improving body composition.

Why Visceral Fat Is the Type You Must Monitor Closely

Subcutaneous fat changes how you look.

Visceral fat changes how you function.

High visceral fat increases the risk of chronic disease and shortens lifespan.

This is why identifying and reducing visceral fat early is one of the best decisions you can make for long term health.

A DEXA Scan gives you:

  • Exact visceral fat levels
  • Your risk category
  • A baseline to monitor progress
  • Guidance on whether your training and nutrition are working

This is far more accurate than BMI or tape measures.

How to Reduce Unhealthy Fat Levels

The most effective methods include:

  • Strength training to build lean mass
  • Regular walking and daily movement
  • High protein diet
  • Prioritising sleep
  • Reducing stress
  • Improving insulin sensitivity
  • Reducing alcohol intake
  • Consistent monthly tracking with DEXA scans

Fat loss is not only about eating less. It is about improving how your body uses and stores energy.

The Bottom Line

Not all fat is equal. Subcutaneous fat affects appearance, essential fat supports health, brown fat boosts metabolism, and visceral fat reveals hidden risks that often go unnoticed until it is too late. Understanding the differences helps you take smarter steps to improve your health and longevity.

With DEXA Scan tracking at Kalos, you can measure each type of fat accurately and make data driven decisions to improve your body composition and overall health.

Book Your DEXA Scan with Kalos Today in Downtown San Francisco, San Jose or Palo Alto!

If you are ready to take control of your health with the most accurate body composition analysis available, it is time to book your DEXA scan at Kalos. Whether you are looking to get lean, build muscle, improve performance, or optimize longevity, our advanced technology and expert guidance will help you get there.

Schedule your scan today at Kalos, your journey to data-driven fitness starts now.

Schedule your DEXA scan today!

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