It's been proven for some time now that spouses and children of smokers have increased health problems from second - hand smoke. (petbehavior.org)
Dogs age must faster than humans do, and with old age comes increased health problems and risks. (animals.howstuffworks.com)
Homes are made from scrap materials and frequently lack electricity, running water, and proper sanitation, leading to increasing health problems as well. (bookbrowse.com)