When they marry, husbands and wives have well-developed health histories and well-established inborn and developmental habits toward good and iii health. Substantial research suggests that, given the existing health tendency and health condition of an individual at a particular time, his or her probability of better or worse future health is affected by a variety of social factors that are subject to influence or operation by his or her spouse. Spouses can affect each other's health by developing psychological stress. A substantial literature develops strong evidence that psychological stress causes illness, increase risk of death rate, and serves as an important mechanism that links socioeconomic characteristics to health and death rate. Stress-reducing mechanisms include removal of sources of stress, and management of stress by talking about it to a trusted person, psychological treatment, physical exercise, recreation and other means. You can go to see professionals, but they cannot give a satisfactory solution. A spouse can provide or encourage all of these stress-reducing behaviors. Spouses also can promote each other's health by providing each other with supporting social contact, and they can facilitate or inhibit each other's social contact with others. Evidence suggests that health is greatly advanced by supporting social contacts, including positive interaction with relatives, friends, colleagues and acquaintances. Recent experimental data shows that persons with more diverse social networks are more resistant to psychological diseases than persons with less diverse social networks. Spouses can also promote each other's health by providing each other with money, and they can help each other manage money effectively. Money does not buy health directly, but it can be used to purchase goods and services that make good health more likely. These goods and services include nutritious food, a tidy and safe environment, medical care, and pleasant things that reduce psychological stress. Unless estranged or unusually wealthy, husbands and wives almost always share their financial resources and purchase and consume many of these health-promoting goods and services together. In short, there are many ways in which spouses can influence each other's probability of good health. From paragraph one, we know that ______.