The same factors that increase risk of depression in otherwise healthy people also raise the risk in people with other medical illnesses. These risk factors include a personal or family history of depression or loss of family members to suicide. However, there are some risk factors directly related to having another illness. For example, conditions such as Parkinson’s disease and stroke cause changes in the brain. In some cases, these changes may have a direct role in depression. Illness-related anxiety and stress can also trigger symptoms of depression.Depression is common among people who have chronic illnesses such as the following:
Sometimes, symptoms of depression may follow a recent medical diagnosis but lift as you adjust or as the other condition is treated. In other cases, certain medications used to treat the illness may trigger depression. Depression may persist, even as physical health improves. Research suggests that people who have depression and another medical illness tend to have more severe symptoms of both illnesses. They may have more difficulty adapting to their co-occurring illness and more medical costs than those who do not also have depression. It is not yet clear whether treatment of depression when another illness is present can improve physical health. However, it is still important to seek treatment. It can make a difference in day-to-day life if you are coping with a chronic or long-term illness.
It may have come as no surprise that people with a medical illness or condition are more likely to suffer from depression. The reverse is also true: the risk of developing some physical illnesses is higher in people with depression. People with depression have an increased risk of cardiovascular disease, diabetes, stroke, and Alzheimer’s disease, for example. Research also suggests that people with depression are at higher risk for osteoporosis relative to others. The reasons are not yet clear. One factor with some of these illnesses is that many people with depression may have less access to good medical care. They may have a harder time caring for their health, for example, seeking care, taking prescribed medication, eating well, and exercising. Ongoing research is also exploring whether physiological changes seen in depression may play a role in increasing the risk of physical illness. In people with depression, scientists have found changes in the way several different systems in the body function, all of which can have an impact on physical health:
It is not yet clear whether these changes, seen in depression, raise the risk of other medical illness. However, the negative impact of depression on mental health and everyday life is clear.
Do not dismiss depression as a normal part of having a chronic illness. Effective treatment for depression is available and can help even if you have another medical illness or condition. If you or a loved one think you have depression, it is important to tell your health care provider and explore treatment options. You should also inform the health care provider about all treatments or medications you are already receiving, including treatment for depression (prescribed medications and dietary supplements). Sharing information can help avoid problems with multiple medications interfering with each other. It also helps the provider stay informed about your overall health and treatment issues. Recovery from depression takes time, but treatment can improve the quality of life even if you have a medical illness.