Couples not living together for a long period of time may affect their health, such as endocrine disruption, decrease in body immunity, and impact on mental health. 1. Endocrine disruption: Proper sexual life between husband and wife helps to regulate the level and secretion of sex hormones. If couples do not live together for a long time, they cannot stimulate the secretion of sex hormones, which may lead to endocrine disorders. 2. Decrease in body immunity: If the couple’s sex life is harmonious, it can enhance body immunity and help prevent some diseases or germs. If couples do not live together for a long time and have irregular sex life, it may lead to a decline in body immunity. 3. Impact on mental health: If couples do not live together for a long time, lack of communication, easy to trigger anxiety, irritability and other emotions, may lead to the emergence of depression, affecting mental health. To summarize, it is recommended that couples learn to care for each other, be honest with each other, and try to improve the relationship pattern of long-term cohabitation, to ensure physical and mental health, and the marriage will be more durable.