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Statins and other popular cholesterol-lowering drugs may help your heart, but they may not protect your brain from age-related diseases such as dementia and Alzheimer’s disease, a new study shows. The most common types of dementia include Alzheimer’s disease and dementias resulting from blood vessel abnormalities. Some evidence supports the …

SAN FRANCISCO – Online retailer Amazon.com Inc. (AMZN) Tuesday posted a drop in quarterly profit but topped Wall Street expectations despite the costs of free and discount shipping programs. Shares rose 9 percent in after-hours trade as the company also forecast third-quarter sales above some analysts’ targets. Second-quarter net income …

WASHINGTON – Despite a boost from the majority leader, there is not enough Senate support now to override a threatened veto if Congress tries to ease restrictions on embryonic stem cell research (search), a key proponent said Sunday. A favorable Senate vote is considered more likely now that Majority Leader …