Physical Inactivity and Life Expectancy in Canada.

Area of Science:

• Public Health
• Epidemiology
• Biostatistics

Background:

• Physical inactivity is a significant public health concern in Canada.
• Few studies have quantified the impact of physical inactivity on population health outcomes.
• Understanding these impacts is crucial for developing targeted health interventions.

Purpose of the Study:

• To estimate the impact of physical inactivity on life expectancy in Canada.
• To quantify the potential gains in life expectancy by increasing physical activity levels.

Main Methods:

• A cause-deleted methodology was utilized to assess life expectancy.
• Life expectancy was calculated using abridged life table analysis.
• Population-attributable fractions were used to estimate deaths attributed to physical inactivity for major chronic diseases.

Main Results:

• Overall life expectancy in Canada was estimated at 79.7 years.
• Physical inactivity was associated with a reduction in life expectancy by 0.86 years (approximately 10 months).
• Life expectancy reductions were observed in males (0.65 years) and females (1.0 year).

Conclusions:

• Encouraging physical activity among Canadians could increase average life expectancy by over 10 months.
• Addressing physical inactivity is a viable strategy for public health improvement.
• These findings underscore the importance of promoting active lifestyles to enhance population health and longevity.