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A new study suggests high doses of B vitamins may halve the rate of brain shrinkage in older people experiencing some of the warning signs of Alzheimer's disease.

Brain shrinkage is one of the symptoms of mild cognitive impairment, which often leads to dementia. Researchers say this could be the first step towards finding a way to delay the onset of Alzheimer's.

Acne is classified as mild, moderate or severe. Mild acne consists of blackheads, whiteheads and a few spots or pimples. Moderate acne is more inflamed skin and patches of stains. Severe acne is more extensive, often affecting the face, neck, back, chest and shoulders, with pustules and papules, which are deep-seated and long lasting. They are often painful, and most likely to scar the skin, which is a color long after the acne is left disappeared.

Scientists have discovered that the hormone oxytocin might help wallflower overcome embarrassment in social situations. The chemical nicknamed "the hormone of love" is known to increase empathy and loyalty - especially parents and their children. But now researchers have found, it improves the social skills of shy - but has little effect on those who are naturally confident. The finding could have implications for people with severe social deficits that are often significantly under conditions such as autism.

Heart patients with a personality "concerned", the so-called Type D, may be at increased risk for cardiovascular problems in the future, according to a study by the University in the Netherlands Tiburg in the journal Circulation of the American Association Heart.