Month: January 2014

Milk Drinking Still a Mystery

The mutation for milk-drinking evolved independently in different parts of the world over the last 10,000 years as a result of strong natural selection, but why was it so advantageous?

Among the more momentous developments in human evolution was the ability to digest milk beyond early childhood.

Milk: Does It Really Do A Body Good?
Add it to the list of things that are bad for you: milk!
Mutations that enabled lifelong milk drinking appeared independently in several parts of the world over the last 7,500 years, according to growing evidence. And those genes spread rapidly. Today, about a third of adults around the world can drink milk without stomach problems, a trait known as lactase persistence.

But why was milk drinking so advantageous to humankind?

A new study debunks one leading theory: that milk provided a valuable source of vitamin D, which would’ve helped people absorb its calcium.

Newly analyzed human skeletons from an ancient site in Spain show that the milk-drinking gene spread just as rapidly in that sun-drenched climate as it did in other places, suggesting that milk must have been beneficial there for some reason other than its vitamin D content.

“Throughout the years, I have heard so many evolutionary hypotheses about lactase persistence because they are so fun to coin,” said Oddný Sverrisdóttir, an evolutionary biologist at the University of Uppsala in Sweden. “For decades now, people have hypothesized that it was because of lack of sunlight in the north of Europe that people would have had to supplement the lack of calcium and vitamin D by drinking milk.”

“Now, looking at this picture from Spain,” she said, “the calcium-assimilation hypothesis either didn’t affect the evolution of lactase persistence at all, or other forces were there as well.”

Sverrisdóttir has long been interested in how and why Europe’s early farmers began drinking milk, so she was excited when she got her hands on well-preserved samples of skeletal remains from eight people who lived in northeastern Spain about 5,000 years ago. That was well after the milk-drinking mutation had appeared in northern Europe, and she was eager to find out if those ancient Spaniards were drinking milk, too. So the first thing she did was test their DNA for lactase persistence.

“I thought at least one would have the mutation,” since so many of today’s Spanish adults can drink milk without health consequences, Sverrisdóttir said. “None did.”

To figure out whether the recent and rapid spread of lactase persistence in Spain was a fluke or if natural selection was at play, Sverrisdóttir and colleagues compared the mitochondrial DNA of modern Spaniards with the ancient samples. Mitochondrial DNA changes very slowly, making it ideal for tracing family trees over time.

And, the researchers report today in the journal Molecular Biology and Evolution, analyses showed that the ancient cave dwellers were indeed ancestors of people who live and frequently drink milk in Spain today.

Source; discovery news

Your 4- step guide to Detoxification

Sleep — Probably the most important step in getting the clean–up campaign right. One thing which works like a dream is ‘restful sleep’. During sleep, our body works at detoxifying our system and sweeps it clean of all the damage done during the day. Most importantly, it works at restoring our hormonal balance and spikes up the immune system to cope with the next day’s work. Good sleep is linked to good appetite control which means it ensures that you don’t binge the next day and works backwards at reducing our guilt associated with binge eating.

Food — Eating every two hours is not half as difficult as it seems and works wonderfully at reducing our chances of overeating. Having fruits, nuts or wholesome homemade breakfast within 15 minutes of rising helps nourish the system and a well–nourished system is less likely to drown itself in tea,coffee or ‘social drinking’. It is also more likely to feel hungry often in the day.

Staying in touch with your body’s hunger signals and feeding it according to its needs is the crucial aspect of preventing the unhealthy ‘fasting and feasting’ eating pattern, now well established as the classic pattern of creeping obesity (10 kilos in five years syndrome).

Exercise — We owe our body some movement. It’s not designed for a sedentary lifestyle. Be it a Marc or a cycle, both ought to be used at their optimum working levels. Exercise improves blood and nutrient flow to the cells and removes (and recycles) toxins.

It’s an effective way of nourishing and cleaning our system. Hence, people who workout regularly have a clearer stomach, ruling out the panic mode which often compels people to opt for enemas. We must be able to naturally and efficiently let go off the waste products.

A forced expulsion via pills/ powders/ steam/ sauna may not only make us run to the loo multiple times a day but also wash off the important Vitamin B and intestinal flora and fauna. Lost flora and fauna leads to more toxicity because of impaired digestion – the exact opposite of what you expected.

A regular workout stimulates what is called the ‘larger than life kidney’ or the ‘third kidney’ of the body – the skin. The process of sweating as a result of exercise is the best detox for your body.

State of Mind -– An obsession with weight or trying to squeeze into a particular size of clothes speaks volumes of the mind’s imbalance. When the attitude is that of mindless compliance to a fitness or fashion trend, the damage is done even before you subject yourself to a fad diet.
Detoxification begins when the mind accepts the body exactly the way it is and nourishes it out of a sense of responsibility and joy instead of depriving it out a sense of shame and punishment.

Source: Daily Inspirations for Healthy Living

Turning off your smartphone at night can make you more productive at work

What does it mean for you?

Switching off your smartphone at night means better productivity at work the next day.

‘Smartphones are almost perfectly designed to disrupt sleep,’ said Russell Johnson, assistant professor of management at Michigan State University in the US.

‘Because they keep us mentally engaged late into the evening, they make it hard to detach from work so we can relax and fall asleep,’ he warned.

How was the study conducted?

In a pair of studies surveying a broad spectrum of workers, his team found that people who monitored their smartphones for business purposes after 9 p.m. were more tired and were less engaged the following day on the job.

Many of us consider the devices to be among the most important tools ever invented when it comes to increasing productivity of knowledge-based work, said the research published in the journal Organisational Behaviour and Human Decision Processes.

For the first study, the researchers had 82 upper-level managers complete multiple surveys every day for two weeks.

The second study surveyed 161 employees daily in a variety of occupations – from nursing to manufacturing and from accounting to dentistry.

Across both studies, the surveys showed that night-time smartphone usage for business purposes cut into sleep and sapped workers’ energy the next day in the office. (Read: Lower brightness of smartphones to get better sleep)

Why are smartphones bad for sleep?

In addition to keeping people mentally engaged at night, smartphones emit ‘blue light’ that appears to be the most disruptive of all colours of light.

Blue light is known to hinder melatonin, a chemical in the body that promotes sleep, Johnson said.

‘The night-time use of smartphones appears to have both psychological and physiological effects on people’s ability to sleep and on sleep’s essential recovery functions,’ he added.

Source: newsr

Tips to CONTROL your DIABETES naturally

10 ways that will help you in taking care of your blood sugar levels in a natural way

1. Fibre rich natural foods

Diabetics should load up on fruits, vegetables, beans and whole grains as they provide extraordinary support to your digestive system plus your liver. These foods add up the fibre content that helps in clearing toxins from your body as fibre binds to wastes and moves them out

2. Daily exercise

Exercise done daily helps stimulate your respiratory system that includes heart, lungs and breathing that are all natural detoxifiers. Even as you lose weight, you shed the fat that stores toxins.

3. Avoid fad diets

Any kind of diet, even a detox or a cleansing diet or any fasting, dramatically disturbs metabolism and may even do long-term damage especially for people with diabetes.

Diabetics need a steady source of nutrients to support blood sugar, not fasting that overstresses your body’s metabolism.

4. Grapefruit healthy for diabetics

Grapefruit is rich in Vitamin C and Lycopene, anti-oxidants that help protect against heart disease by lowering cholesterol and fighting free radicals.

Pectin in Grapefruit helps control blood sugar spikes.
4. Grapefruit healthy for diabetics

Grapefruit is rich in Vitamin C and Lycopene, anti-oxidants that help protect against heart disease by lowering cholesterol and fighting free radicals.

Pectin in Grapefruit helps control blood sugar spikes.

5. Nuts are healthy for diabetics

Nuts are rich in fibre and magnesium, both of which may help regulate your blood sugar; nuts are good food sources of vitamin E, an anti-oxidant that helps prevent nerve and eye damage.

Nuts go a long way in providing seniors with healthy monounsaturated fats that is good for the diabetic heart. Nuts are high in calories so a small handful each day is enough.

6. Spices healthy for diabetics

Polyphenols found in spices and herbs are powerful anti-oxidants and have an anti-inflammatory effect. Phytonutrients in Cinnamon help improve the ability to respond to insulin, thus helping normalising blood sugar levels.

Add cloves, cinnamon, oregano, marjoram, and sage to your meal.

7. Whole grains vital and healthy for diabetics

Whole grains are packed with anti-oxidants and soluble and insoluble fibre, helping reduce blood sugar spikes, overcome insulin resistance, metabolise fats and also keep the digestive track healthy.

People who eat whole grains regularly have lower blood cholesterol and the grain also keeps blood sugar levels stable.

8. Lean meat healthy for diabetics

Lean meats, fish, beans, soy products and low fat dairy products are great sources of protein.

Ensure that the protein food you choose is low in calories and saturated fat.

9. Protein choices for diabetics

The best choices of protein foods are lower in saturated fat and calories like dried beans, legumes, peas and lentils as they are packed with protein, fibre and complex carbs.

Fish and seafood like cod, halibut herring, salmon, trout, tuna, are excellent protein foods for diabetics; try poultry, without skin with lean cuts of chicken, and turkey.

10. Omega 3 rich foods for diabetics

Salmon or tuna is rich in protein and good fats that help stabilize blood sugar.

You may also include cod, halibut herring, trout, or tuna in your diabetic diet.

Source: rediff

5 reasons why crying is actually good for your baby!

Often you don’t know why your little one is in tears and disturbed to the core. But the good thing about crying is that baby’s indication about his needs and mother’s instincts work together. ‘It’s through crying that a newborn expresses his needs while the mother responds, this also helps in the mother baby bonding,’ says Dr Geetanjali Shah, consultant pediatrician attached to Ashwini Hospital, Mumbai. A crying baby needs soothing and we all know that. But while you whack your brains how to calm your baby know that it’s a healthy sign indicating his overall well-being. Wondering how?

Importance of first cry: This is the sound you had been waiting to hear all the while. It not only marks your baby’s arrival but blows trumpets for you as you enter a new phase of life. ‘This helps the baby to breathe in and the lungs to open up to take in air. Though many parents believe that crying would every time help the lungs to grow stronger but it’s only the first cry that does the trick. Other times look for signs that are distressing the baby,’ says Dr Shah. When your baby breaks into his first cry you know that all is well within and you can sigh in relief.

Helps in communicating: In the absence of crying, you would never be able to know what your baby needs. ‘Crying can be because of various reasons and in varied pitches. Each pitch indicates the level of discomfort or attention needed. Over the period of time each mother learns to read between the cries,’ says Dr Shah. So when your baby cries look for the obvious, is he hungry, needs a diaper change, feeling hot or cold, needs comforting or is crying for attention. ‘Only his cries will tell you that you need to check on his well-being as it serves to be a medium of communication, a kind of language for the baby,’ explains Dr Shah.

Helps in psychological well-being: When you are taking care of or soothing your baby it gives out a message to him that he is not alone. ‘Many adults would advice to ignore a crying baby in order to discipline them, but newborns need more attention than discipline in the initial months of life. This helps the baby to feel secure and safe; a child growing in such care and love develops into a better individual than the one who is not. A baby ignored every time would land being quiet and this would pose a challenge for the baby’s physiological well-being. In fact unusually quite babies can be psychologically disturbed within,’ cautions Dr Shah.

Helps to stretch muscle: If you take a closer look at a crying baby, you would see the many muscles, the limbs or the entire body that’s been twisted and turned while the child whines. Gosh, that’s an exercise in itself! ’But it’s not like babies do not stretch themselves often. So be sure that the cry is not due to any medical reason or colic. Do not leave a child crying for too long,’ says Dr Shah.

Helps shed excess emotional baggage: Now this isn’t surprise that tears are a way of shedding the excess emotional baggage even for babies. Know when they have tantrums and you chose to not obey your little master, the obvious thing for him to do is break into a cry. Don’t panic, this allowing of emotions to come out is also good. ‘Listen to your baby while he cries and explains his needs or desire, especially the toddlers, and then talk it out and distract them. This works to break the tantrum and balance the emotions as well,’ says Dr Shah.

Source: Health India

 

New Child Car Seats May Protect Kids In Side Collisions

The Department of Transportation’s National Highway Traffic Safety Administration (NHTSA) for the first time ever, has announced its proposal on upgrading children’s car seats to survive a side collision, or “T-bone” crash. Under the new rules, child car seats sold in the United States, designed for kids weighing up to 40 lbs., would have to go through a rigorous side-impact test before they are authorized for vehicle use.

“Car seats are an essential tool for keeping young children safe in vehicles and have a proven track record of saving lives,” said NHTSA Acting Administrator David Friedman in the press release. “Today we continue to build on our extensive child seat safety program by adding side-impact crash protection for the first time.”

An NHTSA study has shown that many child death and injuries commonly occur in side-impact crashes. Typically, in these crashes, the car carrying children is stopped at an intersection — usually at a light or stop sign — and when the car begins to go through the intersection, it is struck in the side by a vehicle traveling at a greater speed on the cross street. Unrestrained children are found to be eight times more likely to sustain incapacitating injuries than children restrained in child safety seats. However, the agency believes designing child car seats to withstand side collisions will greatly reduce the number of deaths and injuries per year.

The feds’ proposed test will aim to simulate a T-bone crash where the front of a vehicle traveling 30 mph will strike the side of a small passenger vehicle traveling at 15 mph. The NHTSA chose these speeds because they are known to cover over 90 percent of side collisions seen not only in the U.S., but around the world.

Rather than using actual vehicles, the tests will include sleds because “the aim isn’t to test the crash worthiness of specific vehicles,” NHTSA officials said. The car seat will be positioned on the sled, with another sled ramming the side of the sled with the seat. The tests will use a to-be-developed side-impact 3-year-old child dummy, along with the NHTSA-approved 12-month-old dummy to accurately reflect the age groups of child car seat users.

“As a father of two, I know the peace of mind this proposed test will give parents,” said Transportation Secretary Anthony Foxx, NBC News reported. “We all want to make sure our children’s car seats are as safe as possible, and today’s proposal will give parents and car-seat makers important new data on how car seats perform in side crashes.”

Installation and proper use of safety seats are vital in protecting children in motor vehicles. The NHTSA fact sheet says they can reduce up to 71 percent of fatalities for infants and 54 percent for toddlers. Acknowledging the importance of child vehicle safety, manufacturers like the Dorel Juvenile Group — the world’s largest car-seat maker — has begun to incorporate small, already-inflated air bags.

Some manufacturers are already taking steps to improve the protection afforded by their car seats in side-impact crashes. The Dorel Juvenile Group, the world’s largest car-seat maker, has been incorporating small, already-inflated air bags into some of their models to protect children’s heads from injury in side-impact crashes since 2009, Julie Vallese, a spokeswoman for the Columbus, Ind., company told The Associated Press. “Dorel is committed to side-impact protection,” she said.

The NHTSA proposed regulations will be open for the public to comment on for 90 days after they are published this week. These regulations will not be final until the agency reviews comments and answers any important issues that may arise upon discussions. The agency acknowledges this can take months and sometimes years, but they are hopeful the process will move quickly.

Car-seat makers would be given a three-year time frame to make any design changes necessary to pass the side-crash tests and abide to regulations if and when they are passed. The new child car seats could save five lives and prevent 64 injuries each year, the NHTSA estimates.

The American Academy of Pediatrics suggests infants and toddlers ride in a rear-facing car seat until age 2 and then moved to a front-facing seat with a harness until at least age 4. They will then have to be placed into a “seatbelt-positioning booster seat until they’ve reached 4 feet, 9 inches tall and are at least 8 years old.” Children who outgrow their booster seats are recommended to continue to ride the back seat until they’re at least 13 years old.

Source: Medical daily

Rare surgery saves newborn girl

rare surgery2

A baby girl, who was diagnosed with a life threatening congenital heart disease in the womb, got a new lease of life as doctors at a city hospital performed a corrective surgery on her two hours after she was born.

Doctors at Care Hospital said the girl was suffering from a rare disorder wherein the oxygen-rich blood returned from the pulmonary veins was abnormally getting diverted to the liver instead of heart.

“A foetus is dependent on mother’s blood and hence the baby was normal in the womb. But after birth, babies suffering from this rare malformation, referred as Total Anomalous Pulmonary Venous Return (TAPVR), die without a reconstructive surgery,” said Dr K Nageshwar Rao, paediatric cardiologist, Care Hospital, and part of the team that performed the first-of-its-kind surgery.

Source: Healcon

GSK’s diabetes drug set for European approval

GlaxoSmithKline said on Friday European regulators had given the green light to its once-weekly diabetes drug albiglutide, which it is marketing as Eperzan.

Albiglutide belongs to the same class of injectable GLP-1 drugs as Victoza, from Novo Nordisk, and Byetta and Bydureon, from Bristol-Myers Squibb and AstraZeneca.

A positive recommendation for a drug by the European Medicines Agency is generally followed by a marketing authorization by the European Commission. GSK said a final decision was anticipated later this quarter.

Last year regulators in the United States pushed back an approval decision on the drug until April 15.

Source: Reuters

World’s Oldest Cancer Arose in a Dog 11,000 Years Ago

One cancer outlived the dog in which it emerged by spreading its abnormal cells on to other dogs during mating. Now, researchers have named this sexually transmitted canine cancer the oldest known line of cancer cells, at 11,000 years old.

This type of contagious cancer is extremely rare. Canine transmissible venereal tumor (CTVT) is one of only two known diseases in which cancerous cells from one animal infect another. The researchers compare CTVT to a millennia-old “parasitic life form.”

“The cancer cells in all the dogs around the world today are derived from the original dog,” said Elizabeth Murchison, a study researcher and cancer geneticist at the Wellcome Trust Sanger Institute and the University of Cambridge, both in the United Kingdom.

By looking at a particular type of mutation in the cancer cells from two dogs, an Aboriginal camp dog from Australia and an American cocker spaniel from Brazil, Murchison and colleagues estimated when this original dog — Patient Zero for the bleeding, ulcerated genital tumor-causing disease — lived. And since the cancer cells still contain genetic material from the original dog, the team was able to extract a few clues to its identity.

The original dog was likely medium to large in size. It showed genetic similarity to an Alaskan malamute or husky, and carried a mix of genetic variations associated with the domestication of dogs. Because one of the dog’s two sex chromosomes had disappeared in the cancerous cells, it was unclear whether this dog was male or female, and researchers have yet to determine in what part of the world it lived.

The other naturally occurring cancer spread by the transfer of cancerous cells is a facial cancer afflicting Tasmanian devils and transmitted they bite each other, and this disease puts the animals at risk for extinction. These cancers are extremely rare, because the immune system usually recognizes and attacks foreign cells.

In the DNA (deoxyribonucleic acid) of the dog cancer cells, researchers found what Murchison speculates is a clue to how this cancer established itself early on. Although the original dog lived about 11,000 years ago, its DNA showed a level of inbreeding similar to that of a modern dog breed, perhaps because it was part of an isolated population. It is possible the genetic similarity among the dogs it first encountered helped the cancer cells avoid recognition by their immune systems, allowing it to become established, Murchison said.

Likewise, the low genetic diversity among Tasmanian devils may have contributed to the emergence of the contagious facial cancer that threatens these animals, Murchison said. No similar cancer afflicts humans. However, some human cancers are associated with infection by viruses or other pathogens. For instance, human papillomavirus (HPV) is responsible for 26,000 cases of cancer annually in the United States, the U.S. Centers for Disease Control and Prevention has reported.

Source: Yahoo news

 

First-Time Cesarean Rates Dipped in 2012: CDC

Efforts to curb cesarean birth rates in the United States might be working, with health officials reporting a 2 percent decline in the number of first-time surgical deliveries between 2009 and 2012.

Cesarean delivery rates in 19 states reporting to the U.S. Centers for Disease Control and Prevention averaged 21.9 percent in 2012, the CDC said in a report released Thursday. This represented a return to the rate last recorded for those states in 2006.

Report co-author Michelle Osterman, a statistician at the CDC’s National Center for Health Statistics, said the turnaround was significant. “The rates had been going up every year, but in 2009 they either stabilized or started to come down,” she said.

The real impact might be felt in the overall cesarean rate, Osterman said.

“Because primary cesareans are starting to decline, the overall cesarean rate will be impacted because there is only a 10 percent chance that a woman who has had a cesarean is going to have a vaginal birth afterward,” she said. The overall rate has stabilized at about 33 percent of all births in the United States, Osterman said.

One expert said the report indicates slight progress.

“At least the rate stopped going up,” said Dr. Mitchell Maiman, chairman of obstetrics and gynecology at Staten Island University Hospital in New York City. “After decades of climbing, there seems to be a hold to it. But we could do a lot better.”

The risks to the mother and baby are much higher in a cesarean birth than in a vaginal birth, Maiman said.

“Once you have the first cesarean, you’re overwhelmingly likely to have repeat cesareans,” he said, noting the odds for complications and death rise dramatically with each additional C-section. “It’s also worse for the baby as multiple studies have proven.”

Risks to the mother include infection, excessive bleeding and blood clots traveling to the legs or lungs. Risks to the baby include injury during delivery, breathing problems and the potential need for intensive care.

“Vaginal delivery is the preferred method for having a baby,” Maiman said. “Cesarean should only be resorted to when it’s absolutely necessary.”

Maiman said the cesarean rate is so high because doctors fear malpractice lawsuits.

“The pressure is on physician practices because it takes so much time and energy to stay with a patient for hours for a vaginal delivery, compared to the quickness of a cesarean,” he said. “Most of the lawsuits are for the failure to do a cesarean in a timely fashion.”

In a separate reporting region, the researchers found that in 28 states and New York City, the first-time cesarean rate dropped from 22.1 percent in 2009 to 21.5 percent in 2012.

Source: news.nom