Obesity and cancer third most important risk factor for cancer in the United States, just behind tobacco and diet (see Figure). Obesity is the source of about 15% of all preventable cancers. In 2018, Chinese researchers performed a systematic review and comprehensive quantitative meta‐analysis of cohort studies reporting body mass index (BMI) and the risk of 23 cancer types, providing epidemiological evidence supporting the association between BMI and cancer risk. The strongest positive association between BMI and cancer risk was found among patients in North America. The mechanisms by which obesity may increase the risk of cancer are not well understood, but it
Equator snow lies on the ground. At the Equator the snow line is around "lower" than on Mount Everest and as much as lower than the highest snow line in the world, near the Tropic of Capricorn on Llullaillaco. Certain navies, such as the Royal Navy, Russian Navy, and US Navy, have a tradition of holding ceremonies aboard ships to mark sailors' first crossing of the Equator. These ceremonial events have in the past been notorious for their brutality. Milder line-crossing ceremonies, typically featuring King Neptune, are also held for passengers' entertainment on some civilian ocean liners and cruise ships. Equator