Archive for January, 2009
Origin of blue eyes: a new explanation by science
Blue Eyes Blue Eyes, baby’s got blue eyes. Like a deep blue sea on a blue, blue day … Like a deep blue sea on a blue, blue day … So sang John Anderson in the famous Blue eyes and it is not the only singer, artist, poet, to be enchanted by a muse with blue eyes. This color is linked to a connotatively idea of purity, innocence, blue is the color of the sky, eyes of angels in paintings of Venus iconography, Women poets angelicata stilnovisti.
But there is a scientific explanation for the blue eyes? According to recent research published in the Daily Mail and conducted by scientists at the University of Copenhagen (where you have light eyes is certainly not a rarity), the blue eye mutation results from a genetic dating back some 10,000 years ago. The study, published in the journal Human Genetics, proves the occurrence of a single mutation in a gene called OCA2. The mutation would occur in one person, an inhabitant of the Black Sea coast and caused the cessation of production of brown pigment and modified in blue.
Since then, light eyes have begun to spread, especially in populations of Northern and Eastern Europe, and have a greater attractive force of dark eyes, simply because they are different. It is perhaps for these reasons that continue to inspire romantic songs or more that sell contact lenses colored blue? Who knows, it is certain that blue eyes are a legacy of that ancient gene OCA2, is thanks to him the welcome change that differentiates human eyes between light and dark. Another curious question solved by science.
Be careful; however, warn scientists, like all factors recessive, blue eyes could go back brown. The early twentieth century, half the U.S. population had blue eyes, now only one American in six has blue eyes. But for now this is enough to leave the blue eyes of the song by John Anderson crying in the rain…
Male or female? Tell me how you eat and I’ll tell you what sex your child will
It used to be said for mothers to eat red meat and salty foods to have a son and vegetables, fish and cake for a girl. But our grandmothers were right to give us this advice? He tried to solve the mystery of a research conducted in South Africa by biologist Elissa Cameron of the University of Pretoria.
Dr. Cameron has altered levels of sugar in the blood of experimental animals during the period prior to mating through the administration of water containing a steroid to inhibit the absorption of glucose. The comparison between the offspring of these mice with that of mice which had been given plain water showed that the largest number of females born was from the samples which showed a lower level of sugar in the blood. The data seem to contradict the old folk wisdom that eating more sweets during surely would have led to the birth of a child.
Especially as they are confirmed in a previous study that analyzed the offspring of laboratory mice with diabetes, had already led to conclude that mice with a high level of sugar in the blood give birth to more males. Is not yet known, however, how to lower blood sugar may increase the number of female births. The data, however, is really surprising that the same Dr. Cameron believes that our grandmothers did not entirely wrong despite the suggestions of his research seems to contradict them, for if it is true that the sweet consistently increase the level of blood sugar that happens over a period limited time which is followed by a drastic fall of glucose, while the same cannot be said for the red meat that has the power to raise the level of sugar in the blood for a longer period of time long and therefore be more stable.
Counter drugs: the pharmacy a free brochure to better inform
Self-medication in Italy is a growing phenomenon, especially regarding the propensity of Italians to heal itself. 64% of the population (Census 2007) believes it can cure small problems independently. To greater awareness contributes periodicals, newspapers, television and radio broadcasts, Internet sites that help to achieve greater awareness and a less passive and more interactive with the doctor and pharmacist.
Moreover hand the-counter drugs are an important resource for maintaining the welfare and successfully treat the little annoyances of everyday. But must be used properly and with intelligence. It is not always easy because, despite the huge amount of information on health, few of us have very complete information on responsible products. So much so that it runs the risk of “DIY” or you choose medicines based on word of mouth anything but “scientific”.
Two bad habits that can be very dangerous for citizens, instead, should always be recommended by the pharmacist. Was created to fill this gap by providing scientific information precise and clear, the book “Self-medication for the family - small diseases, treatments and medications over the counter”, edited by Stefano Govoni and Adele LUCCHELLI, pharmacologists, Department of Experimental and Applied Pharmacology of ‘University of Pavia and by Pierluigi Diano, a general practitioner and journalist.
The guide aims to accompany the families in the management of small illnesses and ailments can be treated with OTC drugs. The manual (reach at least 400,000 Italian families) is available in pharmacies throughout Italy and will only be given directly to the pharmacist and free. A significant change of hands of those who “know the drugs” and who “should know better.” The hope of Giorgio Siri, president of Federfarma, is that the book “Self-medication for the family to enter the homes, in many homes, and are consulted when it is useful and not only.
“Especially in this time when the interests of various kinds to push a trivialization of the drug to be considered like any other commodity. In interest of citizens to learn to deal with growing awareness of their health and use medicines from self-medication responsibly, avoiding mistakes or abuse. The book aims to respond to this need. “
As underscored in Professor Stefano Govoni, Department of Experimental and Applied Pharmacology’s University of Pavia, “the book is a guide that speaks exclusively of small ailments and diseases that can be treated with drugs over the counter. A book that should become a beacon for those who want to learn more about these products, if you intend to use them, or those already using them or simply have them available in the medicine. Adds Professor Adele LUCCHELLI, Department of Experimental and Applied Pharmacology’s University of Pavia:
“Knowing better medication helps to avoid excesses and the side effects. We often speak of them as well as the cost that this entails for human health and the health service, but you almost never say that many of these episodes are dependent on the misuse of products. Everything depends on the lack of information about it. Finally, Pierluigi Diano, a general practitioner, affirms the importance of increased awareness by patients on the need to distinguish the small disturbances from the symptoms of a real disease, from medical attention.
It appears, in fact, that an approximate “DIY” drug of frequent, even if symptoms are serious, in about 6% of cases. It is therefore appropriate to have a fair amount of knowledge to help you, but should never be lacking common sense that, no doubt, leads to rely on advice from your doctor or pharmacist.