5 healthy lifestyle habits may add 10 years more

Maintaining five healthy habits — (1) eating a healthy diet, (2) exercising regularly, (3) keeping a healthy body weight, (4) not drinking too much alcohol, and (5) not smoking–during adulthood may add more than a decade to life expectancy, revealed by researchers at Harvard T.H. Chan School of Public Health.

Researchers also 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.

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.

This study underscores the importance of following healthy lifestyle habits for improving longevity.

Source: Harvard T.H. Chan School of Public Health, USA.

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