Good study on the elderly from USC, but the conclusion carries no surprises

http://www.ncbi.nlm.nih.gov/pubmed/21274456

Cardiol Res Pract. 2011 Jan 9;2011:983764.
Lifestyle Practices and Cardiovascular Disease Mortality in the Elderly: The Leisure World Cohort Study.
Paganini-Hill A.

Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA 90089, USA.
Abstract
Modifiable behavioral risk factors are major contributing causes of death, but whether the effects are maintained in older adults is uncertain. We explored the association of smoking, alcohol consumption, caffeine intake, physical activity, and body mass index on cardiovascular disease (CVD) mortality in 13,296 older adults and calculated risk estimates using Cox regression analysis in four age groups (<70, 70-74, 75-79, and 80+ years). The most important factor was current smoking, which increased risk in all age-sex groups. In women, alcohol consumption (≤3 drinks/day) was related to decreased (15-30%) risk in those <80 years old; in men, 4+ drinks/day was associated with reduced (15-30%) risk. Active 70+ year olds had 20-40% lower risk. Both underweight and obese women were at increased risk. Lifestyle practices impact CVD death rates in older adults, even those aged 80+ years. Not smoking, moderate alcohol consumption, physical activity, and normal weight are important health promoters in our aging population.