Related Experiment Videos
Underweight, smoking, exercise and mortality in women
1Harvard Medical School and Harvard School of Public Health, 665 Huntington Avenue, Boston, MA 02115, USA. wyshak@hsph.harvard,edu
The Journal of Nutrition, Health & Aging
|February 23, 2007
Summary
Low body mass index (BMI) in women is linked to higher mortality rates, independent of other health factors. Smoking is also a significant mortality risk, regardless of weight.
Area of Science:
- Epidemiology
- Public Health
- Biostatistics
Background:
- Conflicting research exists regarding the association between body mass index (BMI) and mortality.
- Obesity and BMI are commonly studied, but underweight status requires further investigation.
Purpose of the Study:
- To investigate the relationship between underweight (BMI < 19), behavioral practices, medical conditions, and mortality in women.
- To clarify the independent impact of low BMI on mortality.
Main Methods:
- Statistical analysis of data from 5398 college-educated women.
- Utilized self-administered questionnaires covering medical history, weight, and behavioral practices.
- Estimated risk ratios for mortality associated with low BMI and other factors over a 15-year follow-up.
Main Results:
- The mean BMI was 21.60; 12% of participants were underweight (BMI < 19).
- Underweight women exhibited significantly higher mortality rates compared to those with BMI 19 or higher (OR=1.79, p=0.008).
- Smoking emerged as a significant behavioral risk factor for mortality.
Conclusions:
- Low BMI is an independent risk factor for mortality in women.
- Smoking is a major mortality risk, irrespective of an individual's weight or BMI.
Related Concept Videos
Stress Prevention and Stress Management Techniques IV
Stress often leads to unhealthy habits like smoking, excessive drinking, and overeating, which offer short-term relief but ultimately increase long-term health risks. These behaviors create a cycle that temporarily lowers stress levels but can result in severe long-term health consequences. Breaking these habits is essential to reduce the risk of chronic diseases and improve overall well-being. Three primary changes that support better health include quitting smoking, reducing alcohol intake,...
Lifestyle Factors and Health
Lifestyle factors play a critical role in maintaining overall health and preventing chronic diseases. Key elements, such as regular physical activity, a nutritious diet, and abstinence from smoking, can significantly enhance physical, mental, and emotional well-being while reducing the risk of several life-threatening conditions.
Benefits of Physical Activity
Physical activity, whether through structured exercise or casual activities like walking, biking, or dancing, is a cornerstone of a...
Benefits of Physical Activity
Physical activity, whether through structured exercise or casual activities like walking, biking, or dancing, is a cornerstone of a...
Statistical Methods for Analyzing Epidemiological Data
Epidemiological data primarily involves information on specific populations' occurrence, distribution, and determinants of health and diseases. This data is crucial for understanding disease patterns and impacts, aiding public health decision-making and disease prevention strategies. The analysis of epidemiological data employs various statistical methods to interpret health-related data effectively. Here are some commonly used methods:
COPD: Management Using Bronchodilators and Corticosteroids
Chronic obstructive pulmonary isease (COPD) involves a group of progressive lung disorders characterized by persistent airflow limitation and chronic respiratory symptoms. Asthma-COPD Overlap Syndrome (ACOS), encompassing features of both asthma and Chronic obstructive pulmonary disease (COPD), is a group of progressive lung disorders that includes chronic bronchitis, emphysema, and refractory (non-reversible) asthma. ACOS leads to complex clinical presentations that combine the inflammatory...
Cancer Prevention
Several factors can increase the risk of cancer in an individual. About 50% of cancer cases can be prevented by adopting a healthy lifestyle, regular exercise, eating healthy, and following a modest cancer prevention diet. Epidemiological studies have consistently shown that populations with vegetable and fruit-rich diets have reduced the incidence of cancer. On the other hand, populations who have a diet rich in animal fat, red meat, junk food, or high calories are predisposed to cancer.
Some...
Some...
Anorexia Nervosa
Anorexia nervosa is a complex and severe eating disorder characterized by an intense fear of weight gain, an unrelenting pursuit of thinness, and a distorted body image. It often leads to dangerously low body weight relative to an individual's age and height. This disorder is marked by significant physical and psychological consequences, making it one of the most life-threatening psychiatric illnesses.
Symptoms and Physical Effects
Individuals with anorexia nervosa commonly exhibit extreme...
Symptoms and Physical Effects
Individuals with anorexia nervosa commonly exhibit extreme...