Late night Netflix sessions and getting up early in the morning might be affecting your health for worse in the long run if this new study is to be believed. Getting too little sleep is linked with a higher risk of having low bone mineral density and developing osteoporosis, researchers have warned. Osteoporosis is a disease in which bone weakening increases the risk of a broken bone. Although mass screening for osteoporosis is not recommended among postmenopausal women, there is no consensus on which women should undergo testing for low bone mineral density. The objective of this study was to develop and validate a clinical tool to help clinicians identify which women are at increased risk for osteoporosis and should therefore undergo further testing with bone densitometry.The purpose of this study was to determine total and regional bone mineral density in highly competitive young adult and master male cyclists. Patients with inflammatory bowel disease are at risk of developing metabolic bone disease. AIMS: To compare bone mineral density in patients with Crohn’s disease with patients with ulcerative colitis and healthy subjects, and to evaluate possible risk factors for bone loss in inflammatory bowel disease. A simple questionnaire would be useful to identify individuals most in need of bone mineral density (BMD) testing. We designed a new predictive model and risk assessment instrument based on an extensive review of the literature evaluating risk factors for osteoporosis, and tested its performance in a large cohort of postmenopausal women in whom BMD was measured by dual x-ray absorptiometry. After adjustments, women reporting five hours or less per night had 22 per cent and 63 per cent higher risks of experiencing low bone mass and osteoporosis of the hip, respectively.