Demenz – Dementia

Demenz

Was genau ist Demenz eigentlich? Und wie lässt sich präventiv darauf reagieren? Eindrückliche neue Forschungsansichten und Fakten verständlich erklärt in diesem Video.

Quelle: Quarks & Co – Photo Credit: WDR

Taking a stand: Balancing the benefits, risks of physical activity in children

childrenTwo days ago, Aug 19, the Canadian Society of Exercise Physiology took a stand on the promotion of childhood physical activity and published their position and recommendations in the journal Applied Physiology, Nutrition, and Metabolism (APNM). This position stand provides an important overview of knowledge in the area of risk of physical activity for children and suggests both practical guidelines and a research agenda. Uniquely, this position stand addresses both benefits and risks of physical activity for children. From the position stand:

Key recommendations for the responsible promotion of childhood physical activity:

  1. Professionals/researchers encouraging children to change the type of physical activity or to increase the frequency, intensity or duration of their activity should inquire whether a child has primary healthcare provider-prescribed activity limitations before the child’s activity participation changes.
  2. Physical activity researchers should prioritize the development of evidence regarding the benefits and risks of childhood physical activity and inactivity, particularly the risks of sedentary lifestyles, physical activity associated injury risks accounting for amount of activity performed, and effectiveness of current risk management strategies and screening approaches.
  3. Professionals and researchers should prioritize the dissemination of information regarding the benefits of physical activity and the risks of sedentary behaviour in children.
  4. Parents and professionals should encourage all children to accumulate at least 60 minutes of physical activity daily.

Dr. Pat Longmuir, lead author, a scientist with the Healthy Active Living and Obesity (HALO) Research Group at the Children’s Hospital of Eastern Ontario Research Institute (CHEO-RI) explains why this project started:

“Essentially, it was because of concerns that encouraging children to do vigorous activity was ‘dangerous’ in that it might precipitate a cardiac arrest due to an unrecognized cardiac condition (e.g., the child who dies playing ice hockey). There were equally strong desires to encourage greater physical activity, including vigorous intensity activities, based on current guidelines and recommendations for optimal health (60 mins/day and vigorous at least 3 days/week). We also knew that decisions on this topic are often made based on the personal experiences/beliefs of the individual making the decision because the research/data is almost non-existent. The goal with the position stand was really two-fold:

  1. Make it clear that there is very little to no good data on this topic (and research needs to be done)
  2. Until we have better data, our expert group recommendation is to determine if a child has healthcare provider-prescribed activity restrictions before suggesting any physical activity changes.”

Lori Zehr, President of the Canadian Society for Exercise Physiology comments: “The Canadian Society for Exercise Physiology is extremely supportive of the research conducted in the making of this position stand. The impact of physical activity on children has and always will be an important goal for us. Our physical activity/sedentary behavior guidelines outline the evidence-based recommendations for newborns to youth 17 years of age. We have confidence that this position stand highlights the importance of evidence supporting the benefits, and risks, of childhood physical activity as well as the particular risks associated with their inactivity.”

Dr. Terry Graham, Editor APNM comments: “CSEP, the national voice for exercise physiology, has published an objective report that considers not only the benefits but also the risks of physical activity. The latter have rarely been considered in such young individuals; these may be serious injuries with long term health implications and in rare circumstances sudden death. In today’s world many young children are under the supervision of professionals for extended periods of time while both parents work and furthermore, children are often encouraged to take part in ‘sport camps’ that may provide prolonged, intense exercise. Thus this position stand is particularly timely and applicable to our society.”

Read full article. Source: Canadian Science Publishing (NRC Research Press)

Why Coconut Water Could Replace Your Sports Drink

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Coconut water has taken over the shelves of grocery stores in the past few years, and nutritionists say that some of the hype may in fact be deserved. The drink comes from young, green coconuts, and is rich in potassium and antioxidants. And, compared with sodas or even sports drinks, coconut water is relatively low in calories and sugar. However, the product should not replace water as the main source of hydration, according to experts.

“Coconut water is another beverage option on the market that does offer some nutritional benefits,” Allison Massey, a registered dietician at Mercy Medical Center in Baltimore, told Live Science in an email. For instance, it is a source of potassium and small amounts of sodium, magnesium, calcium and phosphorus, she said. However, experts stress that regular water should still be the main source of hydration, and it is best to incorporate coconut water as an additional beverage option from time to time.

“Generally, water should be a staple when it comes to hydration,” Massey said. “Coconut water is simply another beverage option that can be incorporated in moderation as part of a well-balanced diet, if individuals enjoy drinking it.” [10 New Ways to Eat Well] Read full article.

Source: LiveScience, Photo: Shutterstock

Showdown: Vegetarier vs Fleischesser – ZDF

AmĂĽsante Sendung mit ĂĽberraschenden Ergebnissen:

Ist fleischlos leben wirklich gesĂĽnder und besser fĂĽr die Umwelt? ZDFzeit macht den Test: Vier leidenschaftliche Fleischesser und vier ĂĽberzeugte Vegetarier mĂĽssen gegeneinander antreten.

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Exercise Beats Diet in Reducing Breast Cancer Risk

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Women who lose weight by exercising and eating better may reduce their risk of breast cancer more than women who lose the same amount of weight through diet alone, according to a new study of postmenopausal women. 

Both exercising and eating better are thought to reduce women’s risk of breast cancer by decreasing body fat and levels of the sex hormones related tobreast cancer, according to the researchers. But the researchers investigated whether there is any additional benefit to exercising, beyond the effect of weight loss in reducing cancer risk.

The results suggest exercising has a stronger effect on breast cancers fueled by hormones, compared with dieting, and also offers additional benefits such as preserving lean body mass, said study researcher Anne Maria May, of the University Medical Center Utrecht, in the Netherlands. “Exercise is the preferred weight loss strategy to decrease breast cancer risk,” May said. [7 Cancers You Can Ward Off with Exercise]

About 240 overweight women, ages 50 to 69, who didn’t regularly exercise participated in the study, presented here this week at the annual meeting of the American Society of Clinical Oncology (ASCO). The women’s goal was to lose 11 to 13 pounds (5 to 6 kilograms) over 16 weeks. About one-third of the women dieted, whereas another third enrolled in an endurance and strength training program, working out for four hours weekly. They also followed a slightly healthier diet, with a small decrease in their calorie intake. The rest of the participants didn’t change their habits, and served as controls for the study.

By the end of the study, women in both the exercising and dieting groups achieved their weight-loss goals. However, the exercising participants preserved their lean body mass (which includes muscles and bones), and reduced more of their body fat, compared with the dieting participants.

Moreover, blood tests showed the exercising participants reduced their levels of estrogen more than dieting participants did. (Many breast cancers need estrogen to grow.) Compared with women in the control group, the exercising women showed decreases in all types of estrogen in the body, whereas women in the diet group showed a decrease in only one type of estrogen, according to the study.

The researchers also found the exercising group showed a benefit in levels of other breast cancer related hormones, such as testosterone. It is likely that physical activity influences sex hormone levels mainly through reducing body fat, May said. The findings demonstrate the importance of exercising for postmenopausal women, she said. Previous studies have shown that lack of physical activity is one of the risk factors for developing breast cancer. Other than influencing the sex hormones, it is possible that exercising affects women’s cancer risk by reducing inflammation in the body, or decreasing levels of the hormone insulin, studies have suggested.

Source: Live Science / Photo: The Prospect

Pills vs. Diet For Erectile Dysfunction

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Erectile dysfunction is the recurrent or persistent inability to attain and/or maintain an erection in order for satisfactory sexual performance. It is present in up to 30 million men in the U.S. and approximately 100 million men worldwide. The U.S. has less than 8% of the world’s population, yet up to 30% of the impotence? We’re #1!

But hey, we’ve got red, white, and blue pills like Viagra. The problem is that the pills just cover up the symptoms of vascular disease and don’t do anything for the underlying pathology. Erectile dysfunction and our #1 killer, coronary artery disease, are just two manifestations of the same disease: inflamed, clogged, and crippled arteries, regardless of which organ it affects (See Survival of the Firmest: Erectile Dysfunction and Death).

Atherosclerosis is considered a systemic disorder that uniformly affects all major blood vessels in the body. Hardening of the arteries can lead to softening of the penis because stiffened arteries can’t relax, open wide, and let the blood flow. Thus erectile dysfunction may just be the flaccid “tip of an iceberg” in terms of a systemic disorder. For two-thirds of men showing up to emergency rooms for the first time with crushing chest pain, their penis had been trying to warn them for years that something was wrong with their circulation.

Why does it hit the penis first? Because the penile arteries in the penis are half the size of the coronary artery in our heart. So the amount of plaque we wouldn’t even feel in the heart could clog half the penile artery, causing symptomatic restriction in blood flow. That’s why erectile dysfunction has been called “penile angina.” In fact, by measuring blood flow in a man’s penis we can predict the results of his cardiac stress test with an accuracy of 80%. Male sexual function is like a penile stress test, a “window into the hearts of men.”

Forty percent of men over age forty have erectile dysfunction. 40 over 40. Men with erection difficulties in their 40s have a 50-fold increased risk of having a cardiac event (like sudden death). I said before that various things increase heart disease risk by 20% or 30%. That’s nearly 5000%, leading the latest review to ask, “is there any risk greater?” That’s because it’s not so much a risk factor for atherosclerosis as atherosclerosis itself. A man “with erectile dysfunction (even if he doesn’t have cardiac symptoms) should be considered a cardiac patient until proven otherwise.”

Erectile dysfunction is considered to be a cardiac equivalent; it’s a marker of the coronary artery one likely already has. Thus, there’s more to treating ED than establishing an erect penis; it offers an opportunity for reducing cardiovascular risk. The reason even young men should care about their cholesterol is because itpredicts erectile dysfunction later in life, which in turn predicts heart attacks, strokes, and a shortened lifespan.

May 20, 2014 by Michael Greger M.D.

5 Studies You May Have Missed

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Here’s a roundup of five medical studies published this week that might give you new insights into your health, mind and body. Remember, correlation is not causation – so if a study finds a connection between two things, it doesn’t mean that one causes the other. Read more

This article includes

Source: CNN Health. Photo Credit: Tom Grill/Getty Images

Exercise May Be the Most Effective Weapon Against Aging

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Keeping active may be the secret to staying young for both mice and men. Researchers from Canada’s McMaster University discovered that endurance exercise could halt the aging process in a group of mice, even though they were genetically engineered to age faster.

These furry creatures continued to exhibit the same youthful appearance as normal mice after engaging in a treadmill exercise routine over a period of several months. In addition, the exercise program prevented premature aging in almost every organ of the morphed mice. Details on the mighty mice can be found in the journal.

The results of the analysis indicate that not only can exercise help to prevent an early death, it can also delay the aging process. The researchers said that the exercise routine provided nearly 100 percent protection against graying fur, hair loss, brain and muscle atrophy, and more.

Read the full article here.