What we need is healthier rats

Asparagus Helps Lower Blood Pressure (At Least In Rats) : The Salt : NPR:

"Researchers at the Kagawa Nutrition University in Japan fed a diet consisting of 5 percent asparagus to rats with high blood pressure. As they report in the Journal of Agricultural and Food Chemistry, published online on May 30, after 10 weeks, the rats on the asparagus diet had lower blood pressure than the ones fed a standard rat diet without asparagus."