Married couples often have similar lifestyle habits and physical traits, making them likely to share the same medical problems. In a new study published in the journal Atherosclerosis, researchers examined over 33,000 couples in Japan and the Netherlands. They found that partners often shared lifestyle habits, like smoking and drinking, physical characteristics, like weight and body mass index, and medical diagnoses of high blood pressure, diabetes, and metabolic syndrome. This study suggests that people who have not found their life partner look for one who engages in a healthy lifestyle and behaviors. And already married couples should push each other to improve their health.