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  MAY 2, 2018 by APRIL McCARTHY
5 Healthy Habits Increase Life Expectancy By Decade Or More


Maintaining five healthy habits add more than a decade to life expectancy, according to a new study led by Harvard T.H. Chan School of Public Health.

The five healthy habits are:
1) Eating a healthy diet
2) Exercising regularly
3) Keeping a healthy body weight
4) Not drinking too much alcohol
5) Not smoking-during adulthood

Excessively high levels of body fat are a risk to health. Moreover, the distribution of body fat may be as important as total fat, with excess abdominal fat associated with the greatest health risk. Excessively low levels of body fat are also a risk to health and may be indicative of health problems. It is important to have consistent guidelines that can be used to estimate healthy levels of body fat as well as levels that pose risk of health problems.

Individuals who claim that it is too expensive to eat a well-balanced diet may be surprised to learn that in the long term--after one's eating habits have changed--eating healthily may actually be cheaper than their current diet, according to new research findings.

The old tried and claimed true methods of eating less fat have clearly failed millions of people on these types of calorie reduced diets. More importantly, they damage long-term health by lowering critical cholesterol levels which may cause more serious diseases such as cancer.

Researchers found that U.S. women and men who maintained the healthiest lifestyles were 82% less likely to die from cardiovascular disease and 65% less likely to die from cancer when compared with those with the least healthy lifestyles over the course of the roughly 30-year study period.

The study is the first comprehensive analysis of the impact of adopting low-risk lifestyle factors on life expectancy in the U.S. It will be published online April 30, 2018 in Circulation.

Americans have a shorter average life expectancy-79.3 years-than almost all other high-income countries. The U.S. ranked 31st in the world for life expectancy in 2015. The new study aimed to quantify how much healthy lifestyle factors might be able to boost longevity in the U.S.

Harvard Chan researchers and colleagues looked at 34 years of data from 78,865 women and 27 years of data from 44,354 men participating in, respectively, the Nurses’ Health Study and the Health Professionals Follow-up Study. The researchers looked at how five low-risk lifestyle factors-not smoking, low body mass index (18.5-24.9 kg/m2), at least 30 minutes or more per day of moderate to vigorous physical activity, moderate alcohol intake (for example, up to about one 5-ounce glass of wine per day for women, or up to two glasses for men), and a healthy diet-might impact mortality.

For study participants who didn’t adopt any of the low-risk lifestyle factors, the researchers estimated that life expectancy at age 50 was 29 years for women and 25.5 years for men. But for those who adopted all five low-risk factors, life expectancy at age 50 was projected to be 43.1 years for women and 37.6 years for men. In other words, women who maintained all five healthy habits gained, on average, 14 years of life, and men who did so gained 12 years, compared with those who didn’t maintain healthy habits.

Compared with those who didn’t follow any of the healthy lifestyle habits, those who followed all five were 74% less likely to die during the study period. The researchers also found that there was a dose-response relationship between each individual healthy lifestyle behavior and a reduced risk of early death, and that the combination of all five healthy behaviors was linked with the most additional years of life.

"This study underscores the importance of following healthy lifestyle habits for improving longevity in the U.S. population," said Frank Hu, chair of the Department of Nutrition at Harvard Chan School and senior author of the study. "However, adherence to healthy lifestyle habits is very low. Therefore, public policies should put more emphasis on creating healthy food, built, and social environments to support and promote healthy diet and lifestyles."


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