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TED-Ed - The Benefits of Good Posture. Knuckle Cracking "Firework" Flash Imaged By Radiologists. The world is divided into two very distinct types of person: those who love cracking their knuckles, and those that truly, utterly despise it with every fiber of their being.

Knuckle Cracking "Firework" Flash Imaged By Radiologists

Which Countries Punch Above Their Weight In Education Rankings? Rankings of countries based on how well their students perform in the Programme for International Student Assessment (PISA) always receive a great deal of attention from the media and politicians.

Which Countries Punch Above Their Weight In Education Rankings?

But PISA rankings, produced by the Organisation for Economic Cooperation and Development, are limited when it comes to evaluating the quality of education systems and their efforts to improve children’s lives. The rankings tell us, for example, that 15-year-olds in Germany and the US perform better in mathematics than students in Peru or Indonesia. Yet we also know that income per capita in Peru and Indonesia is way less than that in Germany and the US. Une nuit blanche équivaut à 6 mois de régime gras. Health at a Glance 2015.

Why Do Some Smokers Have Healthy Lungs? Smoking cigarettes, as we all know, carries with it all sorts of risks, from heart disease to mouth cancers.

Why Do Some Smokers Have Healthy Lungs?

Yet there are still some people who, despite having smoked for their entire life, appear to have healthy lungs. Now researchers think they may have cracked the mystery of how they seem to be protected from the ravages of more than 7,000 chemicals they inhale. Vo2 max ou volume maximal d'oxygène. This Awesome Video Takes you on a Tour Inside the Human Heart. Have you ever wondered what the inside of a beating human heart looks like?

This Awesome Video Takes you on a Tour Inside the Human Heart

Well, wonder no more, as researchers have developed an impressive simulation of the human heart to model its movements. This is What 200 Calories Worth Of Different Foods Looks Like. I know what you’re thinking: A 200-Calorie portion of food doesn’t sound substantial.

This is What 200 Calories Worth Of Different Foods Looks Like

However, according to the US Department of Agriculture, the average adult needs to consume about 2,000–2,500 Calories to maintain their weight. The crew over at wiseGEEK have cleared their kitchen cupboards and emptied their fridges in order to photograph what 200 Calories (200 kilocalories) constitutes for different foods. The results may surprise you. Check Out This Video of a Complete Heart Transplant! Heart disease is the number one cause of death around the globe.

Check Out This Video of a Complete Heart Transplant!

While approximately 50,000 people are candidates for transplants, only about 5,000 are performed each year. The first heart transplant surgery was in 1967 in Cape Town, South Africa. After a 25-year-old woman died in a car accident, her heart was given to a 55-year-old man. Unfortunately, the man died only 18 days later. Rejection was common in early surgeries with most patients not lasting more than a couple of weeks, so not many were performed. Today, recipients of donated hearts have a survival rate of 90% after one year and 74% after five years.

Where Does Your Fat Go When You Lose Weight? We talk a lot about dieting and burning off fat, but we actually have a lot of misconceptions about weight loss.

Where Does Your Fat Go When You Lose Weight?

Some people think fat is converted into energy or heat—a violation of the law of conservation of mass—while others think that the fat is somehow excreted or even converted to muscle. I was told early on that you can never lose your fat cells (adipose) once you gain them...they just shrink if you work it off. Well, according to Andrew Brown from the University of New South Wales and Australian TV personality (slash former physicist) Ruben Meerman, when you lose weight, you exhale your fat. Their new calculations, based on existing knowledge about biochemistry, were published in the British Medical Journal this week. “There is surprising ignorance and confusion about the metabolic process of weight loss,” Brown says in a news release. PSG-Barça: «Avec David Luiz, j’ai battu mon record», explique son physiothérapeute. Why Do Europeans Have White Skin? For most of the time humans have lived in Europe, the inhabitants have had quite dark skin, a genetic study has concluded.

Why Do Europeans Have White Skin?

The genes for light skin that came to dominate the continent were a relatively recent arrival. Like the capacity to digest milk as an adult, pale skin was sufficiently advantageous at high latitudes that it spread rapidly through the population. New CT Reveals Inner Structures of Body in Exquisite Detail. Computed tomography (CT) is an excellent noninvasive technique to investigate bones and soft tissue structures in a patient.

New CT Reveals Inner Structures of Body in Exquisite Detail

Unfortunately, sometimes imaging can be difficult, as any movement from the patient can result in images that are unclear and need to be redone. This is especially difficult when dealing with patients who are young children, mentally impaired, suffering from motor disease, or are in pain. To ensure these images are clear, these challenging patients may require sedation, which is not desirable. General Electronics sought to facilitate treatment of these patients and improve the imaging process in general with the development of the Revolution CT. Consommation d’alcool: pour ne plus couper les cheveux en 4 ! Paris, le vendredi 9 janvier 2015.

Consommation d’alcool: pour ne plus couper les cheveux en 4 !


Sleep monitors explained: Rest longer and feel better. Whether you're using a Jawbone UP24, Withings Pulse O2 or a dedicated sleep monitor like Beddit, everyone's looking for a better night's shut eye. But what does all the data mean? Contre la dengue, un nouvel outil : l'usine à moustiques. Where Did HIV Come From? Everyone has heard of HIV. According to estimates by the World Health Organization and the Joint United Nations Programe on HIV/AIDS, 34 million people around the world had HIV in 2010. How Much Sleep Do You Really Need? We spend about 24 years of our lives sleeping, yet the exact function of sleep is still being debated by scientists. In experiments, researchers monitored three groups of participants who slept 4, 6, or 8 hours a night over an extended amount of time. After just two weeks, the group who slept 6 hours had a similar reaction time as a person whose blood alcohol concentration was 0.1 percent. What Happens To Your Body When You Get Ebola? These are the same cells that the AIDS virus (HIV-1) attacks, but Ebola virus kills them far more aggressively.

Exactly when and where you caught Ebola virus is unclear, it can take anything between two and 21 days from initial infection to the first symptoms. What is more certain is that you are now infectious yourself. Your family, friends and anyone in close contact with you are all in mortal danger. The next week or so will determine if you are one of the lucky minority who survive. In the 24 Ebola virus outbreaks prior to the present one, a cumulative total of 1,590 people, two-thirds of all cases, have died. The current outbreak, which began in the village of Meliandou in eastern Guinea in early December 2013, and which has now spread across Guinea and into the neighbouring countries of Sierra Leone and Liberia, has killed 251 people as of June 5, nearly half of the identified cases. 46% des Français sont en surpoids - - Santé La salive, élément clef de l’obésité - - Santé

Produits alimentaires

E-Cigarette. L'étude santé du jour : un adulte sur trois est en surpoids dans le monde. C'est la seule bonne résolution qu'il faudrait absolument tenir : garder sa ligne. Car si l'on en croit les conclusions inquiétantes d'un think thank britannique, une véritable épidémie d'obésité guette la population. Selon un rapport du cercle de réflexion, "The Overseas Development Institute", plus d'un adulte sur trois dans le monde est obèse ou en surcharge pondérale. Future Diets - Short version. Future Diets - full reports. Médicaments: ces prix qui varient du simple au quadruple en pharmacie. Voilà une étude qui devrait donner du grain à moudre à la grande distribution qui souhaite mettre fin au monopole des pharmacies.

D'une officine à une autre, les prix des médicaments sans ordonnance peuvent varier du simple au quadruple, selon une enquête de l'association de consommateurs CLCV reprise par Europe 1. Enquete-medicaments-octobre-2013. On dort moins bien les nuits de Pleine Lune. La zone de confort expliquée en stop motion. Diagnostiquer Parkinson, bientôt simple comme un coup de fil.

L’espérance de vie en France. L'espérance de vie a presque doublé au cours du vingtième siècle Au milieu du XVIIIe siècle, la moitié des enfants mouraient avant l'âge de 10 ans et l'espérance de vie ne dépassait pas 25 ans. Elle atteint 30 ans à la fin du siècle, puis fait un bond à 37 ans en 1810 en partie grâce à la vaccination contre la variole. INED - 2004 - Espérance de vie. Santé! dans toutes les langues. Dopage : 30 choses stupéfiantes lues dans le rapport du Sénat sur la lutte contre le dopage - Omnisport. L'histoire retiendra de la commission sénatoriale sur l'efficacité de la lutte antidopage qu'elle a révélé, d'un coup, qui avait pris de l'EPO lors du Tour de France 1998. Ce n'était pas son but, mais sur des sujets si sensibles, il était inévitable que cette liste noire prenne autant d'ampleur.

La commission a aussi fourni 60 propositions pour en finir avec le manque d'efficacité de la lutte contre ces pratiques. Mais même si aucune de ces recommandations n'aboutit, il rester une photographie très documentée des pratiques du moment et de ce qui leur permet de se développer. Bénéfices et risques du poisson.