Measuring perceived barriers to healthful eating in obese, treatment-seeking adults.

Objective: To characterize perceived barriers to healthful eating in a sample of obese, treatment-seeking adults and to examine whether changes in barriers are associated with energy intake and body weight.

Design: Observational study based on findings from a randomized, controlled behavioral weight-loss trial.

Participants: Participants were 113 women and 100 men, mean age 48.

Dietary carbohydrate, glycemic index, glycemic load, and risk of prostate cancer in the Prostate, Lung, Colorectal, and Ovarian Cancer Screening Trial (PLCO) cohort.

Objective: To evaluate the associations between dietary carbohydrate, glycemic index (GI), glycemic load (GL), and incident prostate cancer in the Prostate, Lung, Colorectal, and Ovarian Cancer Screening Trial (PLCO) cohort.

Methods: Between September 1993 and September 2000, 38,343 men were randomized to the screening arm of the trial at one of 10 PLCO centers. A food frequency questionnaire administered at baseline assessed usual dietary intake over the preceding 12 months.

Sex-specific HDL cholesterol changes with weight loss and their association with anthropometric variables: the LIFE study.

Decrease in the level of high-density lipoprotein cholesterol (HDLC) has been observed in women who start dieting, but not in men. Patterns of HDLC change during intentional weight loss through 30-months of follow-up, and their association with changes in anthropometric measurements were examined in obese women (N = 112) and men (N = 100). Missing HDLC values at 6-, 12-, 18-, and 30-month follow-up (N = 16, 34, 55, and 50, respectively) due to dropout were imputed by multiple imputation.

Maintenance-tailored therapy vs. standard behavior therapy for 30-month maintenance of weight loss.

Objective: To assess differences in weight regain one year after an 18-month obesity treatment with standard behavior therapy (SBT) or maintenance-tailored therapy for obesity (MTT).

Method: 213 obese adult volunteers were treated for 18 months using SBT with fixed behavioral prescriptions or MTT that employed varied behavioral prescriptions with treatment breaks. Follow-up analysis focused on weight maintenance after a year of no contact.

Mood, Weight, and Physical Activity Among Obese Individuals Enrolled In a Long-term Weight-loss Program: Trajectories and Associations with Gender.

OBJECTIVE: To examine the trajectories of mood, weight and physical activity, and associations between mood, weight, and gender, among 213 obese individuals. METHODS: Prospective, longitudinal design. Assessments at baseline and 6, 12, and 18 months of Profile of Mood States, Paffenbarger Physical Activity Questionnaire, and weight.

Prospective evaluation of trans-fatty acid intake and colorectal cancer risk in the Iowa Women's Health Study.

Concerns regarding the safety of dietary trans-fatty acids (tFAs) have generated recent public interest, scientific discussion and legislative action. Although most widely recognized as a risk factor for cardiovascular disease, associations between tFA intake and incident cancer have also been proposed. With respect to colorectal cancer (CRC), existing observational data remain limited and inconclusive.