A single elevated ESR, without any symptoms of a specific disease, will usually not give enough information to make a medical decision. Furthermore, a normal result does not rule out inflammation or disease. Moderately elevated ESR occurs with inflammation but also with anemia, infection, pregnancy, and with aging.
Between 65 and 81 percent of people can curl their tongues, and slightly more women than men can do it, studies find. The notion that a person's ability to roll his or her tongue is determined by a single dominant gene stems from a paper published in 1940 by geneticist Alfred Sturtevant.
Estimates of the number of English speakers who are second language and foreign-language speakers vary greatly from 470 million to more than 1,000 million depending on how proficiency is defined. Linguist David Crystal estimates that non-native speakers now outnumber native speakers by a ratio of 3 to 1.