The study aims to randomize 250 participants to 1 of 2 arms: a.) an Active Intervention Group (based on the Look AHEAD* ILI) or b.) a Comparison Group (based on the Look AHEAD DSE Comparison group) to test the hypothesis that a multicomponent, multilevel behavioral weight loss intervention (Active Intervention Group) adapted for different population groups and delivered through Health Information Technology (Health IT) tools via the Electronic Health Record (EHR) patient portal, will result in significantly greater weight loss 12 months after enrollment compared to the Comparison Group.

*The Look AHEAD study was a multi-center, randomized clinical trial involving overweight and obese persons with type 2 diabetes, aimed to determine the effects on the cardiovascular outcomes of an intensive lifestyle intervention (ILI) for weight loss, in comparison to the diabetes support and education intervention (DSE).

This project tests whether the adapted Look AHEAD Intensive Lifestyle Intervention (ILI) will result in significant weight loss when delivered through Health IT - EHR patient portal compared to a Comparison group (based on Look AHEAD DSE Comparison group). This project will be conducted in 2 stages: a formative assessment stage (Stage 1) and a clinical trial stage (Stage 2).

During Stage 1, we will modify the interactive technology-based Look AHEAD ILI that we already developed for the TARGIT study (Active Intervention group). We will also adapt the Look AHEAD Comparison condition (DSE group) for our Comparison condition. We will also optimize the protocol for acceptability in different populations and in a rural setting.

During Stage 2, we will randomly assign 250 participants to either the Comparison Group or the Active Intervention Group to address the primary aim of testing the hypothesis that a multicomponent, behavioral weight loss intervention delivered through Health IT - patient portal will lead to significantly greater weight loss 12 months after enrollment in the Active Intervention group compared with the Comparison group. Our Health IT-based intervention is potentially cost-effective and thus disseminable to any practice-based physician group with access to an EHR with a patient portal.

Inclusion Criteria:

1. are ≥ 16 years old
2. are overweight or obese (BMI ≥ 25 kg/m2)
3. have access to the Internet via the computer or use a cellphone with a data-plan access
4. are patients at one of the participating practice sites
5. are willing to accept a random assignment, and
6. are from different population groups (racial / ethnic minority, lower socioeconomic status, or reside in a rural location).

Exclusion Criteria:

1. coronary or cerebrovascular disease events or vascular procedures within the past 6 months
2. certain medical conditions that put participants at high risk of adverse events or preclude exercising
3. uncontrolled psychiatric disorders
4. current substance abuse, including heavy alcohol use ≥ 5 drinks on the same occasion for ≥ 5 days in the past 30 days
5. a history of amputation or bariatric surgery or are planning to have bariatric surgery within the next 12 months
6. current weight loss medication use
7. malignancy within the last 5 years (except skin cancer)
8. plans to move out of the area during the next year
9. current participation in another clinical trial
10. pregnancy or breast feeding or are planning to become pregnant within the next 12 months, and
11. instances judged by the investigators' and primary care providers' discretion.

Investigators will prepare and distribute a dataset maintaining confidentiality of individual participants. The final study analytical database will be processed according to HIPAA definitions for public data sharing and participant data will be de-identified using processes such as: removal of identifiers, translation of dates and ages to delta time values, and assignment of random study identifiers. A series of de-identified data files representing the final analytical data set will be available and provided in a standard format that is readable across a variety of applications and operating system platforms. Other documentation may include: data dictionary, data code book, valid variable ranges, protocol, MOP, intervention manual or programs, and any electronic versions of any paper forms that were used. The data release documentation will provide detailed, organized documentation of study variables and clear instructions on how to install and access the data.

Release and share the data no later than the acceptance of publication of the main finding of the final dataset

Contact PI for access criteria

The randomized portion of this protocol will employ a blinding design so that the CHAMPS study personnel and investigators who are collecting and assessing outcome data (i.e., weight) will not know a participant's group assignment status (blinded to assignment). Neither the participants, nor the study staff who provide the intervention, will be blinded to assignment. All participants will be asked not to reveal their CHAMPS study group assignment to blinded clinic personnel. All intervention-related information will be kept separately from outcome data and will not be accessible to blinded staff.