Jeannette M. Beasley

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BACKGROUND The range of protein intakes for optimizing bone health among premenopausal women is unclear. Protein is a major constituent of bone, but acidic amino acids may promote bone resorption. OBJECTIVE The objective was to examine cross-sectional and longitudinal associations between baseline dietary protein and bone mineral density (BMD) among 560(More)
OBJECTIVE To develop and evaluate a pictorial, web-based version of the NCI diet history questionnaire (Web-PDHQ). DESIGN The Web-PDHQ and paper version of the DHQ (Paper-DHQ) were administered 4 weeks apart with 218 participants randomised to order. Dietary data from the Web-PDHQ and Paper-DHQ were validated using a randomly selected 4 d food record(More)
Obese and underweight women who develop breast cancer may have poorer survival compared with normal-weight women. However, the optimal weight for best prognosis is still under study. We conducted a prospective investigation of pre-diagnosis body mass index (BMI) and mortality among 14,948 breast cancer patients in the After Breast Cancer Pooling Project.(More)
BACKGROUND Most of the millions of oral contraceptive (OC) users are under 30 years of age and in the critical period for bone mass accrual. STUDY DESIGN This cross-sectional study of 606 women aged 14-30 years examined both OC duration and estrogen dose and their association with bone mineral density (BMD) at the hip, spine, and whole body (dual-energy(More)
Obestatin, derived from the same gene as the hunger hormone ghrelin, may reduce food intake in animals. The role of obestatin in human physiology is unclear. We evaluated cross-sectional associations between participant characteristics and fasting levels of obestatin as well two other hormones associated with energy balance, ghrelin and leptin. Data are(More)
The 2008 Physical Activity (PA) Guidelines recommend engaging in at least 2.5 h (10 MET-hours/week) of moderate intensity PA per week (defined as 4 METs) to reduce risk of morbidity and mortality. This analysis was conducted to investigate whether this recommendation can be extended to breast cancer survivors. Data from four studies of breast cancer(More)
BACKGROUND Self-report of dietary energy and protein intakes has been shown to be systematically and differentially underreported. OBJECTIVE We assessed and compared the association of diabetes among postmenopausal women with biomarker-calibrated and uncalibrated dietary energy and protein intakes from food-frequency questionnaires (FFQs). DESIGN The(More)
OBJECTIVE To evaluate the capability of DietMatePro, a PDA-based dietary assessment program, to monitor dietary intake and to improve adherence to a dietary regimen. DESIGN Randomized controlled trial. SUBJECTS Overweight and obese (Body Mass Index (BMI) 25-40) participants without dietary restrictions. INTERVENTION Participants (n = 174) were(More)
PURPOSE Higher physical activity (PA) has been associated with greater attenuation of body fat gain and preservation of lean mass across the lifespan. These analyses aimed to determine relationships of change in PA to changes in fat and lean body mass in a longitudinal prospective study of postmenopausal women. METHODS Among 11,491 women enrolled at three(More)
CONTEXT Oral contraceptive (OC) use is common, but bone changes associated with use of contemporary OC remain unclear. OBJECTIVE The objective of the study was to compare bone mineral density (BMD) change in adolescent and young adult OC users and discontinuers of two estrogen doses, relative to nonusers. DESIGN AND SETTING This was a prospective cohort(More)