PortionSize Study 2 Free-Living Evaluation

Inclusion Criteria

Male or female, age 18-62 years

• Body mass index (BMI) 18.5-50 kg/m2
• Subjects who are capable of giving informed consent and complying with all study procedures/requirements.
• Ownership of an iPhone model 6s or later, which the participant is willing to use for the study
• Access to Apple ID, password, and email address and willing to use them during the study
• Willing to use data and any accompanying charges as part of study participation
• Willing to complete all study procedures and adhere to study visit timelines
• Willing to be re-contacted for future research and/or follow-up

Exclusion Criteria

• Active cancer diagnosis (excluding some melanomas)
• Have been 6-month weight unstable (gain/loss >10 lbs in last 6 months)
• Undergoing weight loss treatment
• PBRC employee, as previous reviewers argued that they are not representative of the community
• Women who are currently pregnant or breastfeeding (self-reported)
• Diagnosed with an uncontrolled thyroid disorder (controlled = 3 months of medication)
• Have had or plan to have weight loss surgery (gastric band removal may be allowed at PI discretion)
• Allergic to or unwilling to eat study foods provided (exceptions made at the discretion of the PI)
• Consume >28 alcoholic beverages per week
• Anyone severely immunocompromised
• Any condition or circumstance that in the judgement of the PI could interfere with study participation