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05.05.2006 Health

Top 15 Ways to Live Longer

Top 15 Ways to Live Longer

It's been said that a man dies simply because he doesn't know how to live longer. Well, thank goodness for progress.

People are living longer these days. According to the Centers for Disease Control and Prevention, in 1920 the average life expectancy was 54. Today, people can expect to live to 78.

Feel free to speculate about why -- better food supply, better medical care, better hygiene or any number of other factors. It's not totally clear to scientists how they all add up. But what we do know is that studies are finding genetics don't tell the whole story when it comes to which diseases will likely kill us.

"There's a saying that genetics load the gun, but it's the environment that pulls the trigger," says Dr. David Fein, medical director at the Princeton Longevity Center, a clinic in Princeton, New Jersey, that focuses on quality of life and prolonging it. "You can have the gene for a certain disease, but it doesn't mean you're going to get it."

Take heed: Your lifestyle choices are very significant. While there is no way to ultimately defy death, that isn't an excuse to start indulging in vices and neglecting your health. There are plenty of ways to keep the grim reaper at bay -- and many of these "secrets" result in an improved quality of life.

If you really want to live longer, then start with your attitude. Your way of thinking not only improves your outlook on life, but also how long you actually live. In 2002, researchers at the Mayo Clinic in Rochester, Minnesota, found that optimistic people decreased their risk of early death by 50 percent compared with those who leaned more toward pessimism.

"The exact mechanism of how personality acts as a risk factor for early death or poorer health is unclear," says Dr. Toshihiko Maruta, the main investigator in the study. Most likely, it has to do with the fact that pessimists have an increased chance for future problems with their physical health, career achievements and emotional stress -- particularly depression. "Yet another possibility could be more directly biological, like changes in the immune system," Maruta adds.

Besides looking through rosier-colored glasses, there are other personality traits that can help us live longer, healthier lives. According to Dr. Howard Friedman, a psychologist at the University of California at Riverside, conscientiousness is related to mortality in a significant way. The Terman Life-Cycle Study, which ran from 1921 to 1991, examined an array of factors like personality, habits, social relations, education, physical activities and cause of death.

"Those low on adult conscientiousness died sooner," Friedman concluded. Conscientiousness does not mean looking both ways before crossing the street, it means looking both ways when the light turns green so you don't accidentally run down a slow-moving pedestrian. Beyond that, a conscientious person's long-living qualities probably have to do with the fact that they are predisposed to constructively reacting to emotional and social situations, and are more likely to create work and living environments that promote good health.

There are also more traditional practices that the aspiring centenarian can take. People should stop smoking, eat a balanced diet and maintain a healthy weight. While these may sound "nanny-ish," they are factors that cannot be overlooked. This might not sound like much fun, but it's a lot more fun than being dead.

Research shows that obesity, for example, contributes to a slew of medical conditions, including diabetes, heart disease and various cancers. So powerful are certain lifestyle choices that recommended diets along with maintenance of physical activity and appropriate body mass can, over time, reduce the incidence of cancer by 30 percent to 40 percent, according to the American Institute for Cancer Research.

Animal lovers will be happy to know that having a pet can add years to your life, as well. One of the first studies in this arena, which appeared in Public Health Reports in 1980, showed that the survival rates of heart-attack victims who had a pet were 28 percent higher than those of patients who didn't have an animal companion. "The health effects seem to be very real and by no means mystical," says Alan Beck, director of the Center for the Human-Animal Bond at Purdue University. "Contact with companion animals triggers a relaxation response," he says.

Rebecca Johnson, a professor of gerontological nursing at the University of Missouri, Columbia, showed that interaction with pets does, in fact, reduce levels of the stress hormone cortisol. The ability of companion pets to reduce our overall stress level probably accounts for most of their life-extending qualities. "For many people, pets also provide a reason to get moving," adds Johnson. How many people, after all, would actually get any exercise if it weren't for overenthusiastic dogs?

To many people, quality of life is equally as important as life span. It is a good thing, then, that many of the factors that can improve your longevity can also improve your quality of life. After all, who really wants to live forever when they can have a life that ended perfectly?

15 Ways to Live Longer

1. Don't Oversleep
Here's a reason not to hit the snooze button anymore: Sleeping too much can reduce life expectancy, according to a February 2002 study in the Archives of General Psychiatry. The study found that people who sleep more than eight hours per night had a significantly higher death rate than normal. But late-night-party-goers shouldn't rejoice: researches say that sleeping less than four hours also increases death rates. People who sleep between six and seven hours per night were shown to live the longest

2.Be Optimistic
Researchers at the Mayo Clinic in Rochester, Minn., found that optimistic people had a 50% decreased risk of early death compared with those who leaned more toward pessimism. The results, published in the August 2002 issue of Mayo Clinic Proceedings, make sense: Those with a positive outlook on life are probably less stressed, better equipped to deal with adversity and, consequently, healthier. Optimists also tend to have lower blood pressure than pessimists, which, again, is most likely related to how positive thinkers respond to stress.

3.Have More Sex
No complaints here. There's decent evidence that sex helps keep us healthy, and thus increases longevity. But according to researchers, it's not necessarily an actual biological response generated by sex that makes us live longer. What's more likely is that having intimate sex means you are less stressed, happier and better rested--all factors that can lower blood pressure and protect against stroke and heart disease. A study published in the April 2004 Journal of the American Medical Association found that "high ejaculation frequency was related to decreased risk of total prostate cancer."

4. Get A Pet
People who own pets, especially dogs, have been shown to be less stressed and require fewer visits to their physicians than non-owners. Survival rates for heart-attack victims who had a pet have been shown to be 12% longer than for those who did not have one, according to one of the first studies dealing with the impact pets can have on our health, led by researcher Erica Friedmann. Pet owners have also been shown to have lower blood pressure. The reasons are most likely related to an array of psychological factors, such as the facts that owning a pet decreases loneliness and depression, encourages laughter and nurturing, and stimulates exercise.

5. Get A VAP
It's estimated that about half of the people with heart disease--the No. 1 killer in the U.S.--have normal cholesterol levels, which raises serious doubt about the ability of traditional cholesterol tests to detect risk. But more advanced cholesterol tests, like the VAP test, made by the Birmingham, Ala.-based lab Atherotech, may remedy that. VAP measures important metrics that traditional tests miss. Regular tests only detect half of the people with heart disease, while the VAP has been shown to detect 90% of heart disease patients. That's important because lipid abnormalities can most often be rectified with medication and dietary changes. And the sooner you start making changes, the better.

6. Be Rich
According to the National Center for Health Statistics, 24% of Americans whose family income is less than $20,000 are "limited" by chronic disease, whereas only 6% of people with an income of $75,000 or more have this problem. In general, population groups that suffer the worst health have the highest poverty rates and the least education. One possible explanation: Higher incomes permit access to better food and housing, safer neighborhoods and increased medical care. Higher incomes also increase the opportunity to engage in health-promoting behaviors. Of course, being a chief executive certainly exposes you to a high level of stress that can decrease life expectancy. But according to the data, striving to be financially comfortable is a good goal for aspiring centenarians.

7. Stop Smoking
To say that smoking is bad for your health is, of course, not revelatory. But it still cannot be denied that quitting can significantly improve your prospects for a long life. Middle-aged men who are long-term, heavy smokers face twice the risk of developing more aggressive forms of prostate cancer than men who have never smoked, according to findings that appeared in the July 2003 issue of Cancer Epidemiology, Biomarkers and Prevention. According to a recent study in the Archives of Gerontology and Geriatrics, cigarette smoking has been clearly linked to the most common causes of death in the elderly.

8. Chill Out
A study led by the Johns Hopkins University School of Medicine in 2002 found that men classified as having the highest level of anger in response to stress were over three times more likely to develop premature heart disease than men who reported lower anger responses. They were also over six times more likely to have a heart attack by the age of 55. One possible explanation is the correlation between anger and high blood pressure, a condition that commonly develops in highly stressed individuals. The lesson is simple: Try as much as you can to let unavoidable, everyday stresses roll off your shoulders.

9. Eat Your Antioxidants
Antioxidants, substances that are found in foods ranging from cinnamon to blueberries, can scavenge free radicals, compounds whose unstable chemical nature accelerates the effect of aging on our cells. Until these excess free radicals are quenched by antioxidant molecules, cellular damage accumulates. This contributes to an array of degenerative diseases, including atherosclerosis, Alzheimer's and cancer. Research shows that certain types of beans (kidney, pinto, black) are among the best sources of antioxidants, while blueberries and other berries follow close behind.

10. Marry Well
While the phrase "marry well" is typically used to describe people who marry someone rich, we are talking about something entirely different: genetics. Apparently, longevity genes can be inherited. According to a February 2005 study in Mechanisms of Aging and Development, exceptional longevity and healthy aging is an inherited phenotype across three generations. So, for the single people out there, pick a spouse whose grandparents are still alive. This won't make you live longer, but it might help your children.

11. Exercise
Get up and start moving. Not only does exercise help us maintain our weight, it improves our cardiovascular health, strengthens the bones and increases endorphins in the body--hormones that give us energy, make us happier and help ward off stress and disease. "If you don't use it, you lose it," says Dr. Merl Myerson, director of cardiovascular prevention at St. Luke's/Roosevelt Hospital in Manhattan. "We find that active people will do better, live longer.

12. Laugh A Little
Laughter reduces levels of stress hormones like adrenaline and cortisol. It also releases endorphins that work as pain killers and gives your blood circulation a boost. Not to mention it relaxes blood vessels and keeps a person from being angry--a significant predictor of heart disease. "The higher you score on anger and hostility, the greater the likely hood you'll have a heart attack," says Dr. David Fein, medical director at Princeton Longevity Center in New Jersey.

13. Lose Weight
For people who are overweight or obese, life is a ticking time bomb. They have increased risk of heart disease and several types of cancer, along with higher risk of developing Type 2 diabetes--a condition that is becoming an epidemic in the U.S. "The real way to lose weight is to cut back on food intake," says Dr. David Fein, Medical Director at Princeton Longevity Center in New Jersey. "People are under the impression that they can exercise weight off, but exercise is a means to maintain weight.

14. Manage Stress
Everyone has stress to a certain degree, but not everyone knows how to manage it. The key is to recognize what the big factors are in your life and how to mitigate them. Constant stress produces high levels of cortisol, which has been shown to impair cognitive functioning and weaken the immune system. "I think stress kills more people than just about anything else," says Dr. David Fein, medical Director at Princeton Longevity Center in New Jersey.

15. Meditate
According to Dr. Woodson Merrell of Beth Israel Hospital in New York City, the most powerful healing tool for stress and prolonged life is meditation. It clears the mind of thought and lets a person concentrate on tranquility. Fifteen minutes of meditation has been shown to produce a much more relaxed state of mind than one hour of the deepest sleep. Even starting the day with just two minutes of meditation can be beneficial. Sit with your spine erect and try to quiet your thoughts; it may help to concentrate on one word.