Please select the eligibility criteria that correspond to the clinical trial below.
Title: Pilot Trial of "My Meal Mate" (MMM), a Smartphone Application Designed to Facilitate Weight Loss.
Brief Summary: The aim of this study is to implement an exploratory pilot trial of "My Meal Mate" (MMM), a smartphone application developed to facilitate weight loss, assessing its feasibility and acceptability. Overweight and obese adults will be recruited from large employers within the local area. The trial will aim to recruit a sample size of 135 which is a pragmatic decision based on randomizing 45 people to each arm. Participants will be randomized to one of three groups. The researchers have developed a smartphone application for weight loss called "My Meal Mate" (MMM) which incorporates a large branded food and drink database. MMM was developed using focus group data collected from potential system users and by benchmarking with similar commercially available diet tracking applications. One group will receive a smartphone with the MMM app downloaded on it, one group will receive access to an online food diary and one group will be given a paper food diary. Participants will be asked to set a goal for weight loss and self-monitor their food intake and activity using their allocated study equipment. Participants will be weighed at the beginning of the trial, at 6 weeks and at 6 months. Feasibility and acceptability outcomes will be assessed.


Options:
A: Inclusion Criteria:

* Aged 18-65
* BMI equal to or greater than 27 kg/m2
* Willing to commit the necessary time and effort to the study,
* Employed by a large employer in Leeds (and expects to continue to be employed there for the next 12 months),
* Able to read and write in English,
* Able to access the internet,
* Willing to be randomised to one of three groups.

Exclusion Criteria:

* Pregnant, planning a pregnancy within next 12 months, lactating
* Has had surgery for weight loss
* Taking the medication sertraline (due to associations with weight gain)
* Taking anti-obesity medications or medications for diabetes
B: Inclusion Criteria:

* ages 21-65 years old
* Body Mass Index (BMI) 25-45 kg/m2
* interested in losing weight through dietary change
* current use of iPhone or Android smartphone
* current use of email address
* has daily access to a bathroom scale
* no recent weight loss (≥10 lbs) in the past 6 months
* able to read and write in English
* able to attend 3 in-person evaluation visits at Duke University in Durham, North Carolina over a 3-month period

Exclusion Criteria:

* current participation in another weight loss treatment
* currently pregnant or planning to become pregnant within study period, or \< 1 year post-partum
* history of cardiovascular event, eating disorder, diabetes mellitus, hypothyroidism, cancer, end stage renal disease
* current uncontrolled hypertension
* use of the MyFitnessPal app to track food in the past 6 months
* Former or planned bariatric surgery
* current use of medication (e.g., lithium, steroids, anti-psychotics)
* use of weight loss medication in past 6 months
* profound cognitive, developmental, or psychiatric disorders or recent hospitalization in a psychiatric facility
C: Inclusion Criteria:

* Self-reported African American
* Insufficiently Active ( 60 mins or less of PA per wk measured by Exercise Vital Sign Questionnaire)
* BMI\>30
* English speaking and reading
* Own non-Kindle Smartphone iOS 7 or above, or Android 2.3 or above

Exclusion Criteria:

* Concurrent participation in another physical activity, nutrition, or weight loss program
* Endorsement of an item on the Physical Activity Readiness Questionnaire (PAR-Q) unless physical note is provided
* Pregnant or plans to become pregnant in next 12 months
* Plans to relocate out of Phoenix area in next 12 months
D: Inclusion Criteria:

* Age 18 to 35 years
* Intending to be available for a 24 month intervention
* Affiliated with either University of California, San Diego (UCSD), San Diego State University (SDSU), or California State University, San Marcos (CSUSM) as a student, faculty, or staff
* Willing and able to use social media
* Willing and able to use a smartphone and text messaging
* Willing and able to use the wearable, scale, and corresponding app
* Willing and able to attend measurement visits over the 2 year intervention
* Willing and able to engage in moderate to vigorous physical activity
* Overweight or obese, but not severely obese (25 \>= BMI \< 40 kg/m2)

Exclusion Criteria:

* Any comorbidities of obesity that require a clinical referral including eating disorders, pseudotumor cerebri, sleep apnea or hypoventilation syndrome, orthopedic problems, and meeting American Diabetes Association criteria for diabetes
* Psychiatric or medical conditions that prohibit compliance with the study protocol
* Had a cardiovascular event (heart attack, stroke, episode of heart failure, or revascularization procedure) within the last 6 months
* Currently being treated for a malignancy (other than non-melanoma skin cancer)
* Currently being treated and/or have an eating disorder
* Planning to have a weight loss surgery in the next 24 months (e.g., liposuction, lap band, gastric bypass)
* Pregnant, gave birth within the last 6 months, currently lactating or breastfeeding within the last 3 months, or actively planning pregnancy within the next 24 months
* Prescribed physical activity and/or dietary changes
* Prescribed medications that alter weight
* Enrolled in or planning to enroll in a weight loss program during the study period
* Lost more than 15 pounds within the past 3 months

Answer: A