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Farmers made cheese 7,000 years ago

Chemical analysis has revealed that humans in prehistoric Europe made cheese some 7,000 years ago. The research by an international team of scientists, led by the University ofBristol, indicated that prehistoric farmers in modern-day Poland used clay strainers to turn cow’s milk into cheese.

The scientists said that the cheese-making process began before people developed the ability to digest the lactose sugars in unprocessed milk. “The interesting thing is that people at that stage could not digest the lactose in the milk, so processing milk into cheese would have given them the benefit from the nutritious effects of milk without having the side-effect of being ill,” Discovery News quoted said Melanie Salque, a chemist at the University of Bristol in the United Kingdom, as saying.

“It was a very good product for them because you don’t have to kill animals to get the milk out of them. Milk was a big development and cheese was as well,” she added. The Linearbandkeramik were the first major farmers to settle in interior central Europe. In his own work, Thomas has been able to show that these farmers had not yet developed the gene for digesting milk as adults when they were making the cheese-strainers.

Instead, the new study shows that the Linearbandkeramik people came up with a clever way to reduce the lactose content of their milk and make it nutritious and digestible, Thomas said.

They also created distinct ceramic pots for solving a unique dietary problem. They weren’t necessarily the first people to make cheese, but the new discovery is the earliest direct evidence of the process.

Giving chest pumps can save more heart attack victims

 The best to way to resuscitate a cardiac arrest victim is to apply chest compressions, say Japanese researchers.  They noted that mouth-to-mouth is often ineffective if performed by an untrained member of the public. It also gets in the way of the crucial chest compression’s need to keep the victim’s heart beating.

They said chest compressions alone could save more lives - and reduce the risk of brain damage, the Daily Mail reported.

 They found that CPR recipients were actually more likely to survive with good brain function if they received hands-only or compression-only cardiopulmonary resuscitation (CPR) compared with traditional CPR with chest compressions and rescue breathing.

The latest findings suggest hands-only CPR is more effective than traditional CPR in emergency situations, adding that not only is hands-only CPR easier to learn, it is more comfortable to perform on a stranger.

“We would like to suggest that compression-only CPR should be the standard and conventional CPR with rescue breathing the option,” the paper quoted Dr Taku Iwami, a senior lecturer in the department of preventive services at Kyoto University School of Public Health, as saying.

Delaying childbirth may reduce breast cancer risk

Younger women who wait at least 15 years after their first menstrual period to give birth to their first child may reduce their risk of an aggressive form of breast cancer by up to 60 percent, researchers say. 

“We found that the interval between menarche and age at first live birth is inversely associated with the risk of triple-negative breast cancer,” Christopher I. Li from Fred Hutchinson Cancer Research Center said.

 While relatively uncommon, triple-negative breast cancer is a particularly aggressive subtype of the disease that does not depend on hormones such as estrogen to grow and spread.

 The reason for this, researchers believe, is that the hormones of pregnancy induce certain changes in the cellular structure of the breast that seem to make the tissue less susceptible to this type of cancer.

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