Related by context. Frequent words. (Click for all words.) 55 study 46 bmj.com 45 bmj.com today 45 longitudinal study 44 journal Obesity 42 journal Sleep 41 cardiorespiratory fitness 41 journal Addiction 41 multicenter study 40 prospective cohort 40 Longitudinal Study 40 American Geriatrics Society 40 postmenopausal women 39 longitudinal studies 39 retrospective cohort study 39 obese adolescents 39 calcium supplementation 38 journal Psychological Science 38 journal Radiology 38 journal Pediatrics 38 journal Neurology 38 journal Hypertension 38 survey 38 journal Stroke 37 findings 37 research 37 socio demographic 37 meta analysis 37 educational attainment 37 Karolinska Institute 37 Harris Decima poll 37 observational study 37 depressive symptoms 37 vitamin D insufficiency 37 epidemiologic studies 37 studies 37 Clinical Endocrinology & 36 HRQOL 36 Lancet Oncology 36 strongest predictors 36 incidence 36 adiposity 36 journal Lancet 36 journal Cell Metabolism 36 Alcoholism Clinical & 36 Values Survey 36 journal Nature Geoscience 36 Health HSPH 35 Adolescent Health 35 hydroxyvitamin D 35 prevalence 35 observational studies 35 Lancet Neurology 35 journal PLoS Medicine 35 journal Fertility 35 socioeconomic status 35 secondhand smoke exposure 35 American Sociological Review 35 Pediatric Academic Societies 35 uninsurance 35 Biology Letters 35 journal Chest 35 post menopausal 35 report 34 journal Human Reproduction 34 NCCAM 34 vegetable intake 34 birthweight 34 reseach 34 Ipsos Reid survey 34 cardiovascular mortality 34 index BMI 34 Lancet 34 NHANES 34 researchers 34 menarche 34 Cell Metabolism 34 Interview Survey 34 Clinical Nutrition 34 epidemiological studies 34 Editorial Projects 34 General Psychiatry 34 census tracts 34 Applied Physiology 34 randomized controlled trial 34 Sahlgrenska Academy 34 Interphone 34 comorbidity 34 undernutrition 34 Hispanic whites 33 Lancet Infectious Diseases 33 cohabiting 33 journal Alcoholism Clinical 33 Mathematica Policy Research 33 telomere length 33 generalizability 33 Parental involvement 33 randomized controlled trials 33 Study 33 dental decay 33 premenopausal women