Scanning Your Body: Choosing the Right Technology for Fitness and Longevity

DEXA, STYKU, and smartphone-based Visual Body Composition (VBC) are compared for tracking body composition in fitness and longevity. DEXA is highly accurate, best for detailed analysis. STYKU offers easier, less accurate tracking, suitable for fitness enthusiasts. VBC, using smartphone cameras, provides convenient monitoring for regular lifestyle checks. The choice varies based on the need for detail, user-friendliness, and regular monitoring.


In the pursuit of fitness and longevity, understanding and tracking body composition has become crucial. Technologies like DEXA, STYKU, and the emerging smartphone-based Visual Body Composition (VBC) are at the forefront of this endeavor. Each offers unique advantages, but which one is right for you? This blog compares these technologies in the context of fitness and longevity, moving beyond mere health monitoring.

DEXA Scans

DEXA (Dual-Energy X-ray Absorptiometry) scans are highly accurate, using low-dose X-rays to measure body composition, bone density, and fat distribution. They can differentiate between bone, fat, and lean tissue with an error rate of about 1-2% for body composition measurements. DEXA is invaluable for detailed information about the distribution of fat and muscle mass throughout the body, making it a top choice for fitness monitoring and assessing the risk of osteoporosis​​.

STYKU 3D Body Scanning

STYKU, a 3D body scanning technology, uses infrared sensors to create a digital model of the body. It's non-invasive, radiation-free, and easy to use. Although slightly less accurate than DEXA, with an accuracy rate within 2% of DEXA scans, STYKU offers a quick, user-friendly alternative for tracking changes in body composition over time. It visualizes progress in fitness programs and tracks weight distribution, limb circumference, body fat percentage, and natural body type​​.

Smartphone-Based VBC

The novel VBC method uses 2D photographs captured by smartphone cameras to estimate total body fat - based on a convolutional neural network (CNN) architecture). The study found that VBC had the lowest mean absolute error and high concordance with DXA, the gold standard in body composition assessment. VBC outperformed other consumer-grade fat measurement devices and offers an accessible tool for quantifying and monitoring body fat percentage in various settings​​.

Comparing Technologies for Fitness and Longevity
  • Accuracy: DEXA scans are the most accurate, making them ideal for detailed body composition analysis. STYKU offers a balance between accuracy and ease of use, while VBC provides a convenient and accessible option with competitive accuracy.
  • User Experience: STYKU and VBC score high on user-friendliness. The non-invasive nature and quick process of STYKU, along with VBC's use of simple smartphone photographs, make them more accessible to the general population.
  • Application in Fitness: For individuals seeking detailed analysis for fitness and longevity, DEXA offers comprehensive insights. STYKU is suitable for regular fitness enthusiasts for progress tracking. VBC, given its ease and accessibility, is excellent for those who wish to regularly monitor their body fat in relation to lifestyle changes.
The Right Choice for You

Choosing the right technology depends on your specific needs:

  • For Detailed Analysis: If you need detailed insights into your body composition, particularly for medical or professional athletic purposes, DEXA is the best choice.
  • For Fitness Enthusiasts: If you're a fitness enthusiast looking for an accurate yet user-friendly way to track your progress, STYKU is a great option.
  • For Regular Monitoring: For those who want to regularly monitor their body composition without much hassle, the smartphone-based VBC method is ideal. It's particularly useful for tracking the impact of lifestyle changes on body fat percentage over time​​.


The choice of body scanning technology for fitness and longevity depends on your accuracy needs, the level of detail desired, and the convenience factor. While DEXA remains the gold standard for detailed analysis, STYKU and smartphone-based VBC offer more accessible options for regular fitness monitoring and lifestyle management. With these technologies, tracking and understanding body composition has never been easier, paving the way for informed decisions towards better health and longevity.

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