Clinical Research Evaluating Smoking Cessation With E-Cigarettes and Nicotine Therapy

Inclusion Criteria: * body mass index (BMI) ≥ 30 kg/m2 (i.e., obese) * smoked ≥ 5 cigarettes/day during the past year * 21 or older (due to minimum legal age EC restrictions) * exhaled breath carbon monoxide (CO) level \> 6 ppm at Baseline (BL) (to confirm self-reported smoking) * willing to use EC or NRT for 8 weeks * access to a Bluetooth-enabled smartphone/tablet (to permit remote measurement of CO and other outcome variables) Exclusion Criteria: * received smoking cessation treatment of any kind in the past 30 days (actively quitting smoking), * currently using EC or NRT more than 2 days/week (this may affect responses to study-supplied products) * hospitalized for mental illness in past 30 days * heart-related event (e.g., heart attack, severe angina) in past 30 days * residing with another person currently enrolled in the study * pregnant, nursing, or planning to become pregnant in the next 6 months * medical contraindication for study or product use (e.g., allergy to adhesives) * taken prescription weight loss medication in the last 30 days