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
Half and half sell many of their tied public houses and McEwan's Scotch and IPA disappeared from public bars across the North East. In Canada and the United States, capitalized "Half & Half" is Guinness draught and Bass Pale Ale. A lower case "half & half" is a generic Guinness draught. Black and Tan is any lager or ale that will support the Guinness draught, although some Irish-themed bars shun the term for its association with the Black and Tans. In the U.S., the terms (Half and Half, Black and Tan, etc.) are not actually interchangeable. All of the versions start with Guinness