March 5, 1987
Calcium supplements, once believed harmless insurance against osteoporosis, can actually contribute to poor bone development by blocking the absorption of manganese, a key trace element in bone development. "There is a manganese absorption problem associated with the use of calcium supplements, especially in large doses," said Constance Kies, Ph.D., who works at the University of Nebraska, Lincoln, and with the Dairy Council of California.
March 16, 2009 |
Teas from across the globe are becoming more and more popular in the U.S. One relative newcomer, yerba mate, is attracting fans for its allegedly jitter-free caffeine boost and high antioxidant content. Lab research suggests some potential health benefits from drinking yerba mate, but studies of lifelong yerba mate drinkers in the tea's native South America suggest the brew increases the risk of some cancers -- a fact most marketing campaigns omit.
February 8, 2004 |
Despite February polls showing President Bush losing his early reelection lead, he's still the favorite. No modern president running unopposed in his party's primaries and caucuses has ever lost in November. But there may be a key to undoing that precedent. The two Bush presidencies are so closely linked, especially over Iraq, that the 43rd can't be understood apart from the 41st.
January 22, 1985 |
Norway will cut imports from South Africa by 50% this year because of Pretoria's policy of apartheid, Commerce Minister Asbjoern Haugstvedt said in an interview published today. Norway has come under pressure to take action on growing trade with Pretoria since the Nobel Peace Prize was awarded in December to black anti-apartheid campaigner Bishop Desmond Tutu. South Africa's main export to Norway is manganese ore.
November 2, 1990 |
Ethyl Corp., a Richmond, Va.--based chemical company, on Thursday temporarily withdrew its application for approval of a gasoline additive designed to reduce emissions, just days before a deadline for the Environmental Protection Agency to act on it. After meeting with EPA officials Wednesday, the company said it needed more time to answer questions raised about HiTEC 3000, a manganese-based additive that the company contends would reduce emissions while boosting octane in unleaded gasoline.