January 18, 2010
Even a good night's sleep doesn't totally compensate for many weeks of sleep loss. And it's the late-night period when the accumulation of sleep loss may be most apparent. Researchers at Brigham and Women's Hospital examined the effect of weeks of insufficient sleep on performance. They scheduled nine healthy volunteers to live for three weeks on a schedule consisting of 43-hour periods in which they were awake for 33 of those hours. That equals about 5.6 hours of sleep for every 24 hours.
CALIFORNIA | LOCAL
October 16, 1997 |
Women 65 and older who take calcium channel blockers--a widely used type of drug for high blood pressure and heart disease--are about twice as likely to develop breast cancer, researchers from the University of Washington reported in Wednesday's edition of the journal Cancer. But the risk of uncontrolled high blood pressure may outweigh any possible added risk of breast cancer, the National Institutes of Health said.
CALIFORNIA | LOCAL
March 17, 1985 |
The high doses of Vitamin B-6 sometimes prescribed for premenstrual syndrome may be toxic, according to a University of Chicago scientist whose dietary guidelines mirror those recommended by other physicians debating the keys to women's nutritional health. Dr.
August 23, 1986 |
People taking 20 or 30 bone meal tablets every day as a calcium supplement may be giving themselves lead poisoning, a researcher said Friday. The bone meal is safe at normal doses, but some contains minute amounts of lead that could accumulate in the body with so-called "megadoses" taken by many vitamin enthusiasts, said Dr. Badi Boulos of the University of Illinois School of Public Health. "If people are taking the normal two or three tablets a day, we're not concerned," Boulos said.
April 22, 1997 |
State Atty. Gen. Dan Lungren settled with makers of calcium supplements and antacids to reduce their lead content--an agreement that consumer advocates called inadequate and unsafe. Lungren said eight manufacturers, including the makers of Rolaids, DI-GEL and Os-Cal, had agreed for the first time to limits on lead, a substance that has been linked to birth defects.
January 26, 1994 |
Add one more to the long list of ills associated with coffee drinking. Researchers at UC San Diego report today in the Journal of the American Medical Assn. that women who drink more than two cups of caffeinated coffee per day suffer a loss of bone density that can lead to bone fractures in later life. Scientists have suspected such a link for several years, but the report provides the strongest evidence of its existence.
April 7, 1993 |
In a surprising discovery, UCLA researchers have found that atherosclerosis, better known as hardening of the arteries, may arise in part through the formation of bone in the arteries. The finding, reported today in the Journal of Clinical Investigation, could open the door to new therapies to prevent atherosclerosis, which is treated by controlling intake of cholesterol and fats, said Dr. Linda Demer, associate chief of cardiology at the UCLA School of Medicine.
March 23, 1986 |
Question: You have mentioned that water hardness can affect the natural pigments in food and result in color changes. Can you explain what is meant by water hardness? Answer: Hard water is simply water that contains natural salts. There are two types of hard water. In one, called "temporarily hard," the calcium, magnesium and iron bicarbonate are precipitated when water is boiled. Over a long period of time, deposits of these mineral salts build up.
January 20, 1987 |
For 19 years, Anaheim-based ICEE-USA has grown steadily even though it ignored diversification, didn't bother to advertise and hardly changed its product--a carbonated drink of crushed ice drenched usually in one of two flavors. Now ICEE, which raised $3.2 million in an initial public offering two years ago, is poised to expand in some areas it has long shunned.
November 18, 1995 |
A slow-release sodium fluoride compound, supplemented with calcium, was recommended for approval as a new drug for osteoporosis by a Food and Drug Administration advisory committee on Friday. The recommendation by the FDA endocrinological and metabolic drugs advisory committee is not binding on the agency, but such recommendations generally are followed. If approved, the drug would be marketed by Mission Pharmacal, a manufacturer based in San Antonio.