Lina W. Olsen

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The severity of the long term consequences of the current childhood obesity epidemic on coronary heart disease is unknown. Therefore we investigated the association between body mass index (BMI) at ages 7-13 years and heart disease in adulthood among 276,835 Danish schoolchildren. We found that higher BMI during this period of childhood is associated with(More)
The Copenhagen School Health Records Register (CSHRR) is a database of health examination information on more than 350 000 schoolchildren who ever attended school in the central municipality of the capital city of Denmark. For longer than 100 years, school-based health care has been provided to children in Copenhagen, and from the 1930s, the material was(More)
BACKGROUND Small size at birth is associated with subsequent cardiovascular disease and diabetes, and large size is associated with obesity and cancer. The overall impact of these opposing effects on mortality throughout the lifespan is unclear because causes of death change with age. METHODS We investigated the association of birth weight with adult(More)
BACKGROUND It is well established that prenatal biologic processes are important for the development of some childhood cancers, whereas less is known regarding their influence on adult cancer risk. High birth weight has been associated with risk of breast cancer, whereas studies of other specific cancers and all cancers together have been less conclusive.(More)
BACKGROUND Entering puberty is an important milestone in reproductive life and secular changes in the timing of puberty may be an important indicator of the general reproductive health in a population. Too early puberty is associated with several psychosocial and health problems. The aim of our study was to determine if the age at onset of pubertal growth(More)
BACKGROUND In Denmark, the obesity epidemic has developed in phases. To investigate if this has been a birth cohort phenomenon, we explored the secular trend in the prevalence of obesity among boys and young men. METHODS We calculated body mass index (BMI; kg/m) over time for 163,835 Danish boys examined at ages 7-11 years and for 708,342 male draftees(More)
OBJECTIVE To assess whether changes in the birth weight distribution or changes in the association of birth weight with the later risk of childhood overweight have contributed to the development of the obesity epidemic. RESEARCH METHODS AND PROCEDURES A Danish population-based cohort study of 124,615 girls and 128,346 boys (ages 6 to 13 years), born(More)
BACKGROUND Recent studies have shown that puberty starts at younger ages than previously. It has been hypothesized that the increasing prevalence of childhood obesity is contributing to this trend. The purpose of this study was to analyze the association between prepubertal body mass index (BMI) and pubertal timing, as assessed by age at onset of pubertal(More)
OBJECTIVE Our aim was to examine whether secular trends in childhood overweight and obesity during five decades could be explained by economic growth. RESEARCH METHODS AND PROCEDURES Annual measurements of height and weight were available for all children born between 1930 and 1983 attending primary school in the Copenhagen Municipality: 165,389 boys and(More)
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