Archive for April, 2015

One Twin Exercises, the Other Doesn’t

Wednesday, April 29th, 2015

– Health is hugely important if you like being on the planet.  I’ve been an exercise junky all of my life and, at 67, I think it is paying off nicely for me.

– Of course, nothing is for sure and I could drop tomorrow.  But for today, I’m deeply pleased at how I’m weathering the aging process.

– You are what you do.  You are what you think.  it does’t get much simpler than that.

– dennis

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Identical twins in Finland who shared the same sports and other physical activities as youngsters but different exercise habits as adults soon developed quite different bodies and brains, according to a fascinating new study that highlights the extent to which exercise shapes our health, even in people who have identical genes and nurturing.

Determining the precise, long-term effects of exercise is surprisingly difficult. Most large-scale exercise studies rely on questionnaires or interviews and medical records to establish the role of exercise. But these epidemiological studies, while important and persuasive, cannot prove that exercise causes health changes, only that people who exercise tend to be healthier than those who do not.

To prove that exercise directly causes a change in people’s bodies, scientists must mount randomized controlled trials, during which one group of people works out while a control group does not. But these experiments are complicated and costly and, even in the best circumstances, cannot control for volunteers’ genetics and backgrounds.

And genetics and upbringing matter when it comes to exercise. Genes affect our innate endurance capacity, how well we respond to different types of exercise, and whether we enjoy working out at all. Childhood environment also influences all of this, muddying the results of even well-conducted exercise experiments.

All of this makes identical twins so valuable. By definition, these pairs have the same DNA. If they were raised in the same household, they also had similar upbringing. So they can provide a way to study the effects of changes in lifestyle among people with the same genes and pasts.

Some past studies had found that older identical twins whose workout habits had diverged over the years tended to age differently, with greater risks of poor health and early death among the sedentary twin.

But no studies had looked at young twins and the impacts of different exercise routines on their health. So for the new study, which was published this month in Medicine & Science in Sports & Exercise, researchers at the University of Jyvaskyla and other institutions in Finland turned to that country’s extensive FinnTwin16 database, which contained twins’ answers to questionnaires about their health and medical conditions, beginning when the pairs were 16 and repeated every few years afterward.

The researchers were looking for young adult identical twins in their early- to mid-20s whose exercise habits had substantially diverged after they had left their childhood homes. These twins were not easy to find. Most of the pairs had maintained remarkably similar exercise routines, despite living apart.

But eventually the researchers homed in on 10 pairs of male identical twins, one of whom regularly exercised, while the other did not, usually because of work or family pressures, the researchers determined.

The dissimilarities in their exercise routines had mostly begun within the past three years, according to their questionnaires.

The scientists invited these twins into the lab and measured each young man’s endurance capacity, body composition and insulin sensitivity, to determine their fitness and metabolic health. The scientists also scanned each twin’s brain.

Then they compared the twins’ results.

It turned out that these genetically identical twins looked surprisingly different beneath the skin and skull. The sedentary twins had lower endurance capacities, higher body fat percentages, and signs of insulin resistance, signaling the onset of metabolic problems. (Interestingly, the twins tended to have very similar diets, whatever their workout routines, so food choices were unlikely to have contributed to health differences.)

The twins’ brains also were unalike. The active twins had significantly more grey matter than the sedentary twins, especially in areas of the brain involved in motor control and coordination.

Presumably, all of these differences in the young men’s bodies and brains had developed during their few, brief years of divergent workouts, underscoring how rapidly and robustly exercising — or not — can affect health, said Dr. Urho Kujala, a professor of sports and exercise medicine at the University of Jyvaskyla who oversaw the study.

Of course, the study was small and not a formal randomized trial, although it involved identical twins.

But Dr. Kujala said he believes that the results strongly imply that the differences in the twin’s exercise habits caused the differences in their bodies.

More subtly, the findings also point out that genetics and environment “do not have to be” destiny when it comes to exercise habits, Dr. Kujala said. For these particular twins, whether their genes and childhoods nudged them toward exercising regularly or slumping on the couch, one of the pair overcame that legacy and did the opposite (for better and worse).

The rest of us can do likewise, Dr. Kujala said. Even if the input from our DNA and upbringing urges us to skip the gym, we can “move more,” he said, and, based on this study, rapidly and substantially improve the condition of our bodies and brains.

– To the original article: ➡

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Losing my religion for equality

Thursday, April 9th, 2015

– Most excellent article by, arguably, the most sincere and honest president during my lifetime.   Too bad that the American electorate did’t think he had the right stuff but then they seem drawn to ‘strong leaders with easy to grasp sound-bite answers’ – much to the detriment of the country and the world.

– Bravo, Jimmy Carter!

– dennis

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Women and girls have been discriminated against for too long in a twisted interpretation of the word of God.

I HAVE been a practising Christian all my life and a deacon and Bible teacher for many years. My faith is a source of strength and comfort to me, as religious beliefs are to hundreds of millions of people around the world. So my decision to sever my ties with the Southern Baptist Convention, after six decades, was painful and difficult. It was, however, an unavoidable decision when the convention’s leaders, quoting a few carefully selected Bible verses and claiming that Eve was created second to Adam and was responsible for original sin, ordained that women must be “subservient” to their husbands and prohibited from serving as deacons, pastors or chaplains in the military service.

This view that women are somehow inferior to men is not restricted to one religion or belief. Women are prevented from playing a full and equal role in many faiths. Nor, tragically, does its influence stop at the walls of the church, mosque, synagogue or temple. This discrimination, unjustifiably attributed to a Higher Authority, has provided a reason or excuse for the deprivation of women’s equal rights across the world for centuries.

At its most repugnant, the belief that women must be subjugated to the wishes of men excuses slavery, violence, forced prostitution, genital mutilation and national laws that omit rape as a crime. But it also costs many millions of girls and women control over their own bodies and lives, and continues to deny them fair access to education, health, employment and influence within their own communities.

The impact of these religious beliefs touches every aspect of our lives. They help explain why in many countries boys are educated before girls; why girls are told when and whom they must marry; and why many face enormous and unacceptable risks in pregnancy and childbirth because their basic health needs are not met.

In some Islamic nations, women are restricted in their movements, punished for permitting the exposure of an arm or ankle, deprived of education, prohibited from driving a car or competing with men for a job. If a woman is raped, she is often most severely punished as the guilty party in the crime.

The same discriminatory thinking lies behind the continuing gender gap in pay and why there are still so few women in office in the West. The root of this prejudice lies deep in our histories, but its impact is felt every day. It is not women and girls alone who suffer. It damages all of us. The evidence shows that investing in women and girls delivers major benefits for society. An educated woman has healthier children. She is more likely to send them to school. She earns more and invests what she earns in her family.

It is simply self-defeating for any community to discriminate against half its population. We need to challenge these self-serving and outdated attitudes and practices – as we are seeing in Iran where women are at the forefront of the battle for democracy and freedom.

I understand, however, why many political leaders can be reluctant about stepping into this minefield. Religion, and tradition, are powerful and sensitive areas to challenge. But my fellow Elders and I, who come from many faiths and backgrounds, no longer need to worry about winning votes or avoiding controversy – and we are deeply committed to challenging injustice wherever we see it.

The Elders are an independent group of eminent global leaders, brought together by former South African president Nelson Mandela, who offer their influence and experience to support peace building, help address major causes of human suffering and promote the shared interests of humanity. We have decided to draw particular attention to the responsibility of religious and traditional leaders in ensuring equality and human rights and have recently published a statement that declares: “The justification of discrimination against women and girls on grounds of religion or tradition, as if it were prescribed by a Higher Authority, is unacceptable.”

We are calling on all leaders to challenge and change the harmful teachings and practices, no matter how ingrained, which justify discrimination against women. We ask, in particular, that leaders of all religions have the courage to acknowledge and emphasise the positive messages of dignity and equality that all the world’s major faiths share.

The carefully selected verses found in the Holy Scriptures to justify the superiority of men owe more to time and place – and the determination of male leaders to hold onto their influence – than eternal truths. Similar biblical excerpts could be found to support the approval of slavery and the timid acquiescence to oppressive rulers.

I am also familiar with vivid descriptions in the same Scriptures in which women are revered as pre-eminent leaders. During the years of the early Christian church women served as deacons, priests, bishops, apostles, teachers and prophets. It wasn’t until the fourth century that dominant Christian leaders, all men, twisted and distorted Holy Scriptures to perpetuate their ascendant positions within the religious hierarchy.

The truth is that male religious leaders have had – and still have – an option to interpret holy teachings either to exalt or subjugate women. They have, for their own selfish ends, overwhelmingly chosen the latter. Their continuing choice provides the foundation or justification for much of the pervasive persecution and abuse of women throughout the world. This is in clear violation not just of the Universal Declaration of Human Rights but also the teachings of Jesus Christ, the Apostle Paul, Moses and the prophets, Muhammad, and founders of other great religions – all of whom have called for proper and equitable treatment of all the children of God. It is time we had the courage to challenge these views.

– Jimmy Carter was president of the United States from 1977 to 1981.

– To the original article:  ➡

 

Posted in CounterCurrents, Philosophical, Religion - The Right Way, Women's Rights | No Comments »