Maternal Smoking Cessation and Pediatric Obesity Prevention

Inclusion Criteria: 1. Able to read, understand, and speak English. 2. Are 18-39 years old 3. Are less than 20 weeks of gestation 4. Have a singleton pregnancy 5. Currently smoking one or more cigarettes per day, based on self-report. 6. Currently smoking biochemically verified by a level of 1 or higher in urine cotinine test (i.e., \>100ng/mL cotinine concentration). 7. Willing to try to quit or reduce smoking by behavioral intervention 8. Willing to monitor smoking status by breath carbon monoxide and saliva cotinine. 9. Willing to provide breath, saliva, and urine samples to test smoking status 10. With low household income (meeting federal income eligibility guidelines for the Special Supplemental Nutrition Program for Women, Infants, and Children) and/or low education level (≤12 years). These disadvantaged pregnant women are very likely not to quit spontaneously, and thus need extra intervention most. 11. Currently living in Erie County or Niagara County; don't plan to move out of these two counties during the current pregnancy. Exclusion Criteria: 1. Previous history of major chronic disease or blood clotting disorders such as cancer, thyroid disorders, heart disease, kidney disease 2. Depression or have been diagnosed with depression or post-partum depression at any time 3. In treatment for Axis 1 disorders that prevent them following smoking cessation interventions