She declared that these warriors only ate blood, meat and milk. According to the guidelines of nutrition experts, these people should have had frequent heart attacks; however, cardiograms showed that they had no symptoms of heart disease. Additionally, blood pressure does not increase with age and people do not gain weight, two characteristics normally associated with age. The author mentioned that the Vanderbilt experimenter was a "man of science" for only accepting what the data could confirm. When he attempted to present his findings, critics silenced him and his career suffered for a time.