Washington, Apr 22 : School-going kids, who witness violence in urban communities, display post-traumatic stress symptoms, a new study has found.

The researchers also found that these children suffer physiological effects with a disruption to their normal cortisol production pattern during the day, which may have long-term negative effects on their health.

Sydney, Apr 22 : Exposure to cigarette smoke induces abnormalities in babies'' brains, thus putting them at increased risk of sudden infant death syndrome, say Australian researchers.

To reach the conclusion, researchers from University of Sydney analysed the brain tissue of babies who had undergone an autopsy at Sydney''s Glebe morgue.

After analysing, they found exposure to any second-hand smoke could precipitate these brain cell changes, and not just exposure in utero by maternal smoking.

London, Apr 22 : A fertility doctor has claimed to have cloned 14 human embryos and transferred them to four women prepared to give birth to cloned babies.

Panayiotis Zavos broke the sacred taboo of human individuality by doing the cloning act.

The cloning was recorded by an independent documentary film-maker who has testified to The Independent that the cloning had taken place.

Apparently, the breakthrough work was carried out at a secret lab-oratory, probably located in the Middle East where there is no cloning ban.

London, April 22 : Kids suffering from diarrhoea and vomiting shouldn't be given fizzy drinks, for they could make their condition worse, say experts.

The National Institute for Health and Clinical Excellence (NICE) said the idea that flat drinks can help with gastroenteritis is untrue, while fruit juices and fizzy drinks do not help either.

NICE suggested that bad cases of stomach bugs in children under five should in fact be treated with rehydration drinks.

Washington, Apr 22: Emotional health plays a very important role in influencing exercise patterns in breast cancer patients, according to a new study.

The study found that patients with greater depressive symptoms and a lower emotional quality of life are less likely to exercise as part of their recovery than are patients reporting less distress.

Washington, Apr 22 : Exposure to pesticides can increase the risk of Parkinson''s disease, say researchers.

Researchers from University of California, Los Angeles have found that fungicide maneb and herbicide paraquat can have detrimental effects on humans.

In a new epidemiological study of Central Valley residents who have been diagnosed with Parkinson''s disease, researchers found that years of exposure to the combination of these two pesticides increased the risk of Parkinson''s by 75 percent.