Sat05192012

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Physical exercise can alter our DNA

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The DNA molecules undergo chemical changes during our lives
 
By Hector Reyna
 
An expert in Molecular Medicine, from the Karolinska Institute, Juleen Zierath, concluded that epigenetic changes are usually given by physical exercise. Such modifications could clarify the fact that sport is so productive for the body.
 
Zierath studies have revealed that the DNA of skeletal muscle taken from a person after intense exercise practiced involves less methyl groups attached to their molecules before exercising.
 
Zierath says in his study: these changes occur in stretches of DNA that normally act on enzymes called transcription factors, compared with "keys" that unlock the muscle genes. These keys work best when there is no methyl groups in between that prevent the passage. DNA changes caused exercise increases the muscle's ability to work.
 
In addition, exercise improves and accelerates the metabolism of fats and sugars.
 

 

Nutrition and Physical Activity: Key factors for longevity

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By Susana Lima
 
During the Tenth International Seminar on Satisfactory Longevity, held in Havana, Cuba, the partial results of a national study was presented for more than 400 thousand centenarians since 2004.
 
Surveyed Cuban Centenarians performed physical activity in the course of their lives showing in their old age much more mobility, less illness, less memory loss and greater satisfaction and good mood.
 
One of the specialists involved in this research, Dr. Josefa Gonzalez said the number of centenarians increase in the island during the past years and the study aims to identify predictors of successful longevity. This research is not a tabloid, we want to apply these criteria in early stages of human existence, she added.
 
More than two of the 11.2 million people in Cuba are older than 60 years and approximately 551 thousand people are over 100 years old.
 
Luisa Bathilde Lima, a researcher who between 2008 and 2010 examined 80 centenarians living in areas of eastern Cuba could see that the country ranks second worldwide in the number of centenarians per capita exceeded only by the region of Sardinia in Italy. Lima concludes from her study that being obese or overweight is bad for longevity.
 
The researcher concluded from her study that interviewed people with more than 100 years in the eastern region of Cuba shared the unique characteristics: Drinking coffee and being thin people. According to Lima, people reported eating a little and in several portions during the day with an established feeding schedule and a unique preference for milk.
 
Most subjects were peasants, very active and of good character, demonstrating to have been good people over the course of their lives. The "head" of the Cuban centenarians is Juana de la Candelaria Rodriguez, who is 126 years and still, lives in the eastern province of Granma.
 
Life expectancy at birth in this country is 78 years on average, 76 for men and 80 for women; which exceeded by 20% to men within the community of centenarians in Cuba.
 

10 tips to rejuvenate your brain

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By Susana Lima
 
Besides taking care of our physical beauty, we must not forget the care and performance of our brain. Our lifestyle is an important factor that influences our brain performance from memory loss to brain tumors and other disorders that can also be generated from our genes or disease developed in the course of our lives.
 
There are various activities that can help us keep our brains active and prevent deterioration like making puzzles, play sudoku, exercise, resting and other activities are useful for our health and the brain in particular.
 
We must not forget that proper nutrition helps improving the health of this body member. We should consume nuts and omega 3 to help the brain to get adequate nutrients. Everything we do to protect our brains will also take care of our heart.
 
The most important activities are:
 
1. Playing chess, puzzles and doing activities that make you think avoid the deterioration of your mind.
 
2. Find a diet rich in vitamin B to improve concentration and memory.
 
3. Try eating sugar from fruits and natural foods, since they maintain the cells your brain active.
 
4. Eat strawberries, blackberries and raspberries because despite not stopping the passage of time, they decrease the deterioration of the brain.
 
5. Consume foods rich in omega 3 such as whole grains, vegetables, fruits, beans, nuts, whole grains, seeds and other foods with fatty acids such as olive oil, coconut, butter etc.
 
6. Avoid high alcohol consumption because it weakens cognitive functions.
 
7. Cigarette smoke also causes brain cell damage.
 
8. You must respect the hours of sleep. Insomnia, anxiety and sleep disorders impair your mind.
 
9. Playing sports is important to clear your mind.
 
10. Consider that everything good for your brain, is also good for your heart. Therefore everything harmful to the brain is also for the heart and could cause a stroke.
 
 
 

A new point in favor of "Fast Food"

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By Emmanuel Marroquin

We usually associate fast food with large amounts of fat, sugar, coloring, few vitamins, especially when we exclude other healthy foods, but how many possibilities do we have of saying no if we barely have time to eat?

A new proposal for "fast food" that provides a rich and nutritious alternative adding seasonings or strong condiments or too many calories. It is not always bad to eat fast food once in a while, we don’t always have time to eat at home or cook something healthy.

Garlic reduces cardiovascular disease risk

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By Nicole Mendoza

Garlic not only be delicious flavor to when certain foods, in fact, according to science, garlic can reduce cholesterol and triglycerides in the body.

A study by researchers at the Institute of Toxicology, Shandong University, China, analyzed more than 26 previous studies that evaluated the effects of garlic in the body, and found that the results are improved following long-term treatment. Such therapies, scientists say, can be of great benefit for people with an increased risk of cardiovascular disease.

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