The Breathe Light Study

The Breathe Light Study: Validation of Carbon Stable Isotope Ratio in Breath as an Indicator of Energy Balance and Substrate Utilization

The purpose of this study is to develop a novel, non-invasive method that will provide personalized feedback during dietary interventions as a marker for compliance.

Inclusion Criteria:

• 18 to 65 years old
• Overweight (BMI 25-40 kg/m2)

Exclusion Criteria:

• Metabolic or cardiovascular abnormalities (diabetes, uncontrolled hypertension, etc.)
• Gastrointestinal disorders
• Disease that affects macronutrient utilization
• Medication that affects macronutrient utilization
• Allergies to foods to be utilized in the study (including but not limited to lactose intolerance/milk allergy)
• Use of nutritional/sport supplements
• Pregnant or currently trying to become pregnant