Healthcare News and Research

[Greyson]

Jul 15, 8:28 PM EDT

STUDY: LATER RETIREMENT MAY HELP PREVENT DEMENTIA

BY MARILYNN MARCHIONE
AP CHIEF MEDICAL WRITER

BOSTON (AP) -- New research boosts the "use it or lose it" theory about brainpower and staying mentally sharp. People who delay retirement have less risk of developing Alzheimer's disease or other types of dementia, a study of nearly half a million people in France found.

It's by far the largest study to look at this, and researchers say the conclusion makes sense. Working tends to keep people physically active, socially connected and mentally challenged - all things known to help prevent mental decline.

"For each additional year of work, the risk of getting dementia is reduced by 3.2 percent," said Carole Dufouil, a scientist at INSERM, the French government's health research agency.


Read more:
http://hosted.ap.org/dynamic/stories...07-15-20-28-50

[Kobi]

Originally Posted by Greyson

Jul 15, 8:28 PM EDT

STUDY: LATER RETIREMENT MAY HELP PREVENT DEMENTIA

BY MARILYNN MARCHIONE
AP CHIEF MEDICAL WRITER

BOSTON (AP) -- New research boosts the "use it or lose it" theory about brainpower and staying mentally sharp. People who delay retirement have less risk of developing Alzheimer's disease or other types of dementia, a study of nearly half a million people in France found.

It's by far the largest study to look at this, and researchers say the conclusion makes sense. Working tends to keep people physically active, socially connected and mentally challenged - all things known to help prevent mental decline.

"For each additional year of work, the risk of getting dementia is reduced by 3.2 percent," said Carole Dufouil, a scientist at INSERM, the French government's health research agency.


Read more:
http://hosted.ap.org/dynamic/stories...07-15-20-28-50

I don't know that the researchers proved working in ones later years influences dementia related diseases. I'm not fond of studies that use records (as opposed to interviewing people) as the source of their data. There are too many unknown and unaccounted for variables.

What they have reproven (ad nauseum) is that "being physically active, socially connected and mentally challenged - all things known to help prevent mental decline."

Baby boomers are proving one doesn't have to work to stay physically active, socially connected, and mentally challenged.

[Greyson]

Originally Posted by Kobi

What they have reproven (ad nauseum) is that "being physically active, socially connected and mentally challenged - all things known to help prevent mental decline."

Baby boomers are proving one doesn't have to work to stay physically active, socially connected, and mentally challenged.

Kobi, I tend to agree with you. There was another article posted at the same site that talked about retirees can stay active physically and mentally. Many are doing it through volunteer work, social activism, part-time employment, etc.

Reading many of your posts, I don't think you have to worry about dementia. You still got it.

[Kobi]

Originally Posted by Greyson

Kobi, I tend to agree with you. There was another article posted at the same site that talked about retirees can stay active physically and mentally. Many are doing it through volunteer work, social activism, part-time employment, etc.

Reading many of your posts, I don't think you have to worry about dementia. You still got it.

Greyson, you are always the gentleman. My giant, invisible bunny friend Harvey and I thank.......oooo look a squirrel.

Disclaimer: It is 2:30am. The mind goes weird places.

[*Anya*]

11 Reasons You Should Be Having More Orgasms

The Huffington Post | By Renee Jacques

Posted: 11/05/2013 1:54 pm EST | Updated: 11/05/2013 3:05 pm EST

Orgasm Health Benefits

Clearly, we don't need to convince you to have sex. It's hard-wired into our brains to propagate the species. And anyway, it feels pretty awesome. But here's more good news: Having an orgasm could help improve your health.

One of the main reasons orgasm feels so good is because your brain releases the pleasure hormone oxytocin when you climax. Oxytocin is also called the "love hormone" because of its important role in facilitating social bonding between humans. Most of the following points revolve around the release of oxytocin. Read on to discover eleven ways achieving an orgasm can make your life so much better...

1. Orgasms relieve stress.

In sexologist Beverly Whipple's book, "The Orgasms Answer Guide," she cites a study done by Carol Rinkleib Ellison in 2000, in which Ellison interviewed 2,632 women between the ages of 23 and 90 and found that 39 percent of those who masturbate reported that they do it in order to relax. Whipple says this is all because of oxytocin. When someone orgasms, she explains in her book, "the hormone oxytocin is released from nerve cells in the hypothalamus (a region of the brain) into the bloodstream."

"Orgasm relives tension as oxytocin stimulates feelings of warmth and relaxation," Ellison herself wrote in an informational report compiled by Planned Parenthood.

Additionally, research gathered in a study by scientists at Groningen University in the Netherlands found that when women experience an orgasm, the amygdala, the part of the brain associated with fear and anxiety, shows little to no activity.

2. An orgasm could make your significant other less likely to cheat.

Researchers in Germany decided to conduct an experiment in 2012 testing the power of oxytocin. They believed that high doses of the "love hormone" would cause men to consider going outside of their relationships, so they gave oxycotin to a group of (heterosexual) men and introduced them to a very attractive woman. The subjects were asked to determine when the attractive woman was at an "ideal distance" or an "uncomfortable distance."

Those who took oxycotin and were in monogamous relationships ended up distancing themselves about four to six inches farther than those who took oxytocin and were single. The researchers hypothesized that instead of oxytocin causing coupled men to cheat, it instead compelled them to hold on tighter to the bond they have already formed with their girlfriends.

3. The female orgasm could make men focus better.

There is so much power in the orgasm that an organization in San Francisco, called One Taste, is devoted to the practice of "orgasmic meditation," in which two partners focus on achieving the female orgasm. Recently, actress and former Playmate, Karen Lorre, revealed to HuffPost Live that she has 11 orgasms a day due to One Taste's new meditation practices. Even men have claimed that they receive health benefits by just pleasuring a woman. In a New York Times article on One Taste, a man confessed that "fixing his attention on a tiny spot of a woman's body improves his concentration at work."

4. Orgasms could help with insomnia.

Would you rather take a sleeping pill or have a mind-blowing orgasm to help you catch some Zzs? We think we know the answer. In her book, Whipple cites another study done by Ellison in which she reported that 32 percent of 1,866 U.S. women said they masturbate in order to facilitate falling asleep.

Why? No one knows for sure, though some researchers and sex therapists theorize that the release of other neurochemicals, like endorphins, can have a sedative effect, reported Self.

5. A man's orgasm could (maybe) make a woman less depressed.

A controversial study of college students in relationships at the State University of New York in Albany showed that women who had sex without condoms had fewer signs of depression than women who used condoms or refrained from sex, even when researchers controlled for relationship status and other personal factors.

What does this mean? Semen, resulting from the male orgasm, could be an effective antidepressant for women. That said, unprotected sex is NOT something we'd recommend -- after all, an STD or unplanned pregnancy can surely also contribute to depression, along with other medical and social risks.

The lead psychologist of the study, Gordon Gallup, told New Scientist that he believes the reason semen has the potential to lift a woman's mood is because of the several mood-altering hormones found in it. Gallup said that most of these hormones were found in the women's blood shortly after ejaculation.

6. Orgasms help alleviate pain.

“There is some evidence that orgasms can relieve all kinds of pain -- including pain from arthritis, pain after surgery and even pain during childbirth,” Lisa Stern, a nurse practitioner who works with Planned Parenthood, told Woman's Day. That's thanks to pain-relieving oxytocin and endorphins, reported MSNBC contributor Brian Alexander. Alexander cited research from Beverly Whipple, who found that women's pain tolerance and pain detection increased by 74.6 percent and 106.7 percent respectively, when those women masturbated to orgasm.

7. They could help men get over their colds faster.

A study at a German university studied 11 men who were asked to masturbate until completion. Blood was drawn continuously throughout the process, and it was discovered that sexual arousal and orgasm increased the number of "killer" cells called leukocytes. This means that when men are sick, an orgasm could initiate components of their immune system that could help them get over that bug sooner.

8. Steady orgasms could help you live longer.

In 1997, a group of researchers in Wales decided to look into the relationship between orgasms and mortality. They studied the sexual frequency of 918 men between the ages of 45 and 59. They evaluated those who died from coronary heart disease and discovered that those who had two or more orgasms a week died at a rate half of those who had orgasms less than once a month. The researchers concluded that "sexual activity seems to have a protective effect on men's health."

While women's orgasms have not been studied as extensively, Howard S. Friedman, PhD, and author of "The Longevity Project: Surprising Discoveries for Health and Long Life," decided to look into research conducted on couples. He cited a marital satisfaction study conducted by Stanford psychologist Lewis Terman in 1941, looking at the sex lives of 1,500 Californian couples. Terman recorded the frequency of orgasms these women had. Twenty years later, Friedman and his colleagues studied the death certificates of each of the women in Terman's study. What they discovered was that the women who reported a frequency of orgasm during intercourse tended to live longer than those who reported being less sexually fulfilled.

9. Orgasms will also stimulate your brain.

Orgasms sure get your blood flowing, and that doesn't exclude blood flow to your brain. In August, Rutgers researchers Barry Komisaruk and Nan Wise, asked female subjects to masturbate while lying in a MRI machine that measured blood flow to the brain. When the females orgasmed, it increased blood flow to all parts of the brain while allowing nutrients and oxygenation to all parts of the brain.


10. Orgasms could keep you looking young.

Forget Botox, just have an orgasm. Dr. David Weeks, a British consultant clinical psychologist and former head of old age psychology at the Royal Edinburgh Hospital, spent 10 years quizzing thousands of men and women of differing ages about their sex lives. He discovered that those between the ages of 40 and 50 who reported having sex 50 percent more than other respondents looked younger. While this study does not explicitly state the specifics as to why orgasms could make you look younger, Weeks says this could be because intercourse releases the human growth hormone, which makes skin look more elastic.

11. They just get better as you age.

There's no reason to stop having sex when you get older. In fact, you are more likely to enjoy it even more as you enter old age. A study in The American Journal of Medicine found that sexual satisfaction in women increases with age. Researchers from the University of California studied 806 women living in a planned community home.

The study measured the sexual activity of these women who had a median age of 67 and were all postmenopausal. The findings reported that sexually satisfaction actually increased with age, with approximately half of the women over 80 years old reporting sexual satisfaction almost always or always.

So, never stop having orgasms!

http://www.huffingtonpost.com/2013/1...ef=mostpopular

[*Anya*]

Dog and human brain link revealed, pet dogs took part in the MRI scanning study

Last updated Feb 20, 2014, 4:52 PM PST

By Rebecca Morelle

Science reporter, BBC World Service

Devoted dog owners often claim that their pets understand them. A new study suggests they could be right.

By placing dogs in an MRI scanner, researchers from Hungary found that the canine brain reacts to voices in the same way that the human brain does.

Emotionally charged sounds, such as crying or laughter, also prompted similar responses, perhaps explaining why dogs are attuned to human emotions.

The work is published in the journal Current Biology.

Lead author Attila Andics, from the Hungarian Academy of Science's Eotvos Lorand University in Budapest, said: "We think dogs and humans have a very similar mechanism to process emotional information."

Eleven pet dogs took part in the study; training them took some time.

"We used positive reinforcement strategies - lots of praise," said Dr Andics.

"There were 12 sessions of preparatory training, then seven sessions in the scanner room, then these dogs were able to lie motionless for as long as eight minutes. Once they were trained, they were so happy, I wouldn't have believed it if I didn't see it."


The canine brain reacted to voices in the same way that the human brain does
For comparison, the team looked at the brains of 22 human volunteers in the same MRI scanners.

The scientists played the people and pooches 200 different sounds, ranging from environmental noises, such as car sounds and whistles, to human sounds (but not words) and dog vocalisations.

The researchers found that a similar region - the temporal pole, which is the most anterior part of the temporal lobe - was activated when both the animals and people heard human voices.

"We do know there are voice areas in humans, areas that respond more strongly to human sounds that any other types of sounds," Dr Andics explained.

"The location (of the activity) in the dog brain is very similar to where we found it in the human brain. The fact that we found these areas exist at all in the dog brain at all is a surprise - it is the first time we have seen this in a non-primate."


The team used a variety of techniques to train the dogs
Emotional sounds, such as crying and laughter also had a similar pattern of activity, with an area near the primary auditory cortex lighting up in dogs and humans.

Likewise, emotionally charged dog vocalisations - such as whimpering or angry barking - also caused a similar reaction in all volunteers,

Dr Andics said: "We know very well that dogs are very good at tuning into the feelings of their owners, and we know a good dog owner can detect emotional changes in his dog - but we now begin to understand why this can be."

However, while the dogs responded to the human voice, their reactions were far stronger when it came to canine sounds.

They also seemed less able to distinguish between environmental sounds and vocal noises compared with humans.

About half of the whole auditory cortex lit up in dogs when listening to these noises, compared with 3% of the same area in humans.

Commenting on the research, Prof Sophie Scott, from the Institute of Cognitive Neuroscience at University College London, said: "Finding something like this in a primate brain isn't too surprising - but it is quite something to demonstrate it in dogs.

"Dogs are a very interesting animal to look at - we have selected for a lot of traits in dogs that have made them very amenable to humans. Some studies have show they understand a lot of words and they understand intentionality - pointing."

But she added: "It would be interesting to see the animal's response to words rather than just sounds. When we cry and laugh, they are much more like animal calls and this might be causing this response.

"A step further would be if they had gone in and shown sensitivity to words in the language their owners speech."

Dr Andics said this would be the focus of his next set of experiments.


BBC © 2014

[*Anya*]

Last updated Feb 23, 2014, 6:28 PM PST

By Toby Macdonald

With every decision you take, every judgement you make, there is a battle in your mind - a battle between intuition and logic.

And the intuitive part of your mind is a lot more powerful than you may think.

Most of us like to think that we are capable of making rational decisions. We may at times rely on our gut instinct, but if necessary we can call on our powers of reason to arrive at a logical decision.

We like to think that our beliefs, judgements and opinions are based on solid reasoning. But we may have to think again.

Prof Daniel Kahneman, from Princeton University, started a revolution in our understanding of the human mind. It's a revolution that led to him winning a Nobel Prize.

His insight into the way our minds work springs from the mistakes that we make. Not random mistakes, but systematic errors that we all make, all the time, without realising.

Prof Kahneman and his late colleague Amos Tversky, who worked at the Hebrew University of Jerusalem and Stanford University, realised that we actually have two systems of thinking. There's the deliberate, logical part of your mind that is capable of analysing a problem and coming up with a rational answer.

This is the part of your mind that you are aware of. It's expert at solving problems, but it is slow, requires a great deal of energy, and is extremely lazy. Even the act of walking is enough to occupy most of your attentive mind.

Daniel Kahneman's insights into the mind spring from the systematic errors we make all the time
If you are asked to solve a tricky problem while walking, you will most likely stop because your attentive mind cannot attend to both tasks at the same time. If you want to test your own ability to pay attention, try the invisible gorilla test devised by Chris Chabris, from Union College, New York, and Daniel Simons from the University of Illinois.

But then there is another system in your mind that is intuitive, fast and automatic. This fast way of thinking is incredibly powerful, but totally hidden. It is so powerful, it is actually responsible for most of the things that you say, do, think and believe.

And yet you have no idea this is happening. This system is your hidden auto-pilot, and it has a mind of its own. It is sometimes known as the stranger within.

Most of the time, our fast, intuitive mind is in control, efficiently taking charge of all the thousands of decisions we make each day. The problem comes when we allow our fast, intuitive system to make decisions that we really should pass over to our slow, logical system. This is where the mistakes creep in.

Our thinking is riddled with systematic mistakes known to psychologists as cognitive biases. And they affect everything we do. They make us spend impulsively, be overly influenced by what other people think. They affect our beliefs, our opinions, and our decisions, and we have no idea it is happening.

It may seem hard to believe, but that's because your logical, slow mind is a master at inventing a cover story. Most of the beliefs or opinions you have come from an automatic response. But then your logical mind invents a reason why you think or believe something.

Dr Laurie Santos studies monkeys to learn how deep seated our biases really are
According to Daniel Kahneman, "if we think that we have reasons for what we believe, that is often a mistake. Our beliefs and our wishes and our hopes are not always anchored in reasons".

Since Kahneman and Tversky first investigated this radical picture of the mind, the list of identified cognitive biases has mushroomed. The "present bias" causes us to pay attention to what is happening now, but not to worry about the future. If I offer you half a box of chocolates in a year's time, or a whole box in a year and a day, you'll probably choose to wait the extra day.

But if I offer you half a box of chocolates right now, or a whole box of chocolates tomorrow, you will most likely take half a box of chocolates now. It's the same difference, but waiting an extra day in a year's time seems insignificant. Waiting a day now seems impossible when faced with the immediate promise of chocolate.

According to Prof Dan Ariely, from Duke University in North Carolina, this is one of the most important biases: "That's the bias that causes things like overeating and smoking and texting and driving and having unprotected sex," he explains.

Confirmation bias is the tendency to look for information that confirms what we already know. It's why we tend to buy a newspaper that agrees with our views. There's the hindsight bias, the halo effect, the spotlight effect, loss aversion and the negativity bias.

This is the bias that means that negative events are far more easily remembered than positive ones. It means that for every argument you have in a relationship, you need to have five positive memories just to maintain an even keel.

We feel the pain of financial loss much more than the pleasure of a gain
The area of our lives where these cognitive biases cause most grief is anything to do with money. It was for his work in this area that Prof Kahneman was awarded the Nobel Prize - not for psychology (no such prize exists) but for economics. His insights led to a whole new branch of economics - behavioural economics.

Kahneman realised that we respond very differently to losses than to gains. We feel the pain of a loss much more than we feel the pleasure of a gain. He even worked out by how much. If you lose £10 today, you will feel the pain of the loss. But if you find some money tomorrow, you will have to find more than £20 to make up for the loss of £10. This is loss aversion, and its cumulative effect can be catastrophic.

One difficulty with the traditional economic view is that it tends to assume that we all make rational decisions. The reality seems to be very different. Behavioural economists are trying to form an economic system based on the reality of how we actually make decisions.

Dan Ariely argues that the implications of ignoring this research are catastrophic: "I'm quite certain if the regulators listened to behavioural economists early on we would have designed a very different financial system, and we wouldn't have had the incredible increase in the housing market and we wouldn't have this financial catastrophe," he says.

These biases affect us all, whether we are choosing a cup of coffee, buying a car, running an investment bank or gathering military intelligence.

Humans aren't the only species that shows loss aversion.

So what are we to do? Dr Laurie Santos, a psychologist at Yale University, has been investigating how deep seated these biases really are. Until we know the evolutionary origins of these two systems of thinking, we won't know if we can change them.

Dr Santos taught a troop of monkeys to use money. It's called monkeynomics, and she wanted to find out whether monkeys would make the same stupid mistakes as humans. She taught the monkeys to use tokens to buy treats, and found that monkeys also show loss aversion - making the same mistakes as humans.

Her conclusion is that these biases are so deep rooted in our evolutionary past, they may be impossible to change.

"What we learn from the monkeys is that if this bias is really that old, if we really have had this strategy for the last 35 million years, simply deciding to overcome it is just not going to work. We need other ways to make ourselves avoid some of these pitfalls," she explained.

We may not be able to change ourselves, but by being aware of our cognitive limitations, we may be able to design the environment around us in a way that allows for our likely mistakes.

Dan Ariely sums it up: "We are limited, we are not perfect, we are irrational in all kinds of ways. But we can build a world that is compatible with this that gets us to make better decisions rather than worse decisions. That's my hope."

HORIZON: How You Really Make Decisions is on Monday 24 February, 9pm, BBC2

BBC © 2014