Animal Magic  

Owning a dog or cat is good for your health :that's an idea that's been around for some time.Recently,the amount of evidence supporting this idea has grown even larger .A new study ,published in scientific magzine,found that keeping animals can cut the risk of developing non-Hodgkin's lymphoma-a relatively common cancer of the immune system-by almost one third .
The idea that pets and good health are associated goes back 20 years or more.A psychologist who has researched the relationship between people and their pets got the results. Not all the health benefits can come from normal dog-walking ,however.when a study suggested that people who own pets have better cardiac health .One of the important factors in people recovering well from a heart attack was owning a pet ,and it wasn't just dogs,but also cats.
Here are some of the many ways in which pets have been found to strengthen people's constitutions .
1. Pets are good for cardiac health
2. Pets strengthen the immune system
3. Pets can give health warnings
4. Pets can make depression less likely