DEXA Body Composition Scans in Barrington, IL

DEXA (Dual-Energy X-ray Absorptiometry), also written as DXA, is a full-body imaging scan that uses low-dose X-rays to distinguish between different tissue types. While DEXA is widely known for bone density assessment, it also provides a detailed picture of body composition — how fat, lean tissue, and bone are distributed throughout the body.

At Preventative Medicine by Science, DEXA is positioned as a measurement tool, not a standalone diagnosis. A clinician reviews scan results in context with your health history and goals, then uses that data to inform a personalized wellness plan. Individual results vary; the value is in having objective numbers to track over time.

A single full-body DEXA scan reports several distinct measurements that a bathroom scale or simple BMI calculation cannot provide on their own.

Fat mass — Total body fat and regional fat distribution, showing where adipose tissue is concentrated across the trunk, arms, and legs.

Lean mass — Muscle and other non-fat lean tissue, useful for tracking changes in muscle mass alongside fat changes over repeat scans.

Visceral fat — Abdominal fat surrounding internal organs (distinct from subcutaneous fat just beneath the skin). DEXA can quantify visceral fat as part of a full-body composition report.

Bone density — Bone mineral content measured across body regions, providing baseline data a clinician may use when evaluating skeletal health.

Together, these measurements give a clinician a structured dataset for personalized planning — whether the focus is general wellness, body composition awareness, or measurement-informed care in other clinic services.

Visceral fat is adipose tissue that accumulates in the abdominal cavity, surrounding organs such as the liver, kidneys, and pancreas. It is distinct from subcutaneous fat — the tissue that can be felt just under the skin.

In medical literature, elevated visceral fat has been associated with chronic inflammation and with increased risk for several chronic health conditions, including insulin resistance, cardiovascular disease, and certain metabolic patterns. Research also links visceral fat to inflammatory pathways that may influence long-term health outcomes.

DEXA is one method used to estimate visceral fat as part of a broader body composition report. Measuring visceral fat does not, by itself, diagnose a disease or predict an individual's future health. A clinician interprets visceral fat results alongside other clinical information when discussing what the numbers may mean for a given patient.

This section is educational. It describes what visceral fat is and why it appears in body composition reporting — not whether any particular person has too much of it.

DEXA scans at our Barrington clinic are performed on-site by appointment. The process is non-invasive and typically straightforward.

During the scan: The patient lies still on a scanning table while the DEXA device passes low-dose X-ray beams across the body. The appointment usually takes about 20 minutes, including time to lie still for image capture. Comfortable clothing without metal components (zippers, underwires, or other hardware) is recommended.

Preparation: For best consistency across repeat scans, patients are generally advised to:

• Avoid barium exams or contrast-dye injections for two weeks before the appointment
• Wear workout-style clothing without metal; at least one layer of clothing over undergarments is required during the scan
• Avoid eating a large meal immediately beforehand
• Maintain normal hydration — neither over-hydrating nor dehydrating before the visit
• Keep conditions similar across repeat scans (for example, fasting status) so that changes in results reflect actual body composition shifts rather than short-term variables

After the scan: Results are reviewed by a clinician who explains what the measurements show and how they may inform next steps — whether that means follow-up scans, wellness planning, or coordination with other clinic services. Scan findings are one input in clinical decision-making; they do not replace a full medical evaluation.

Eligibility: DEXA scans are available to patients who meet general equipment requirements. The scanner accommodates patients up to approximately 300 lb and up to about 6'5" in height. DEXA is not performed during pregnancy. Patients who are unsure about pregnancy status may be asked to confirm before scheduling. The ability to lie still for the duration of the scan is also required.

DEXA appeals to health-proactive adults who want objective body composition data rather than estimates from weight alone. Common reasons patients request a scan include:

• Establishing a baseline before starting a clinician-guided wellness or weight management plan
• Tracking changes in fat mass, lean mass, and visceral fat over time with repeat measurements
• Gaining a fuller picture of body composition that BMI or scale weight cannot provide
• Beginning care at a measurement-first wellness clinic where scan data informs personalized planning
• Monitoring progress during supervised fitness, nutrition, or medical wellness programs

DEXA is available to adults seeking data-driven insight into their body composition. A consultation helps determine whether a scan fits an individual's goals and how results would be used within the clinic's care model. Preventative Medicine by Science serves patients throughout Barrington, Lake Zurich, Deer Park, Kildeer, Hawthorn Woods, Palatine, Hoffman Estates, and nearby northwest suburbs.