If you often feel sad, blue, unhappy, miserable, or down in the dumps, you may have depression. Let's talk about depression, and what you can do to get out of your funk.

Depression often runs in families. This may be due to your genes, passed down by your parents and grandparents, the behaviors you learn at home, or both. Even if your genetic makeup makes you more likely to develop depression, a stressful or unhappy life event may trigger the depression.

Depression can have many causes, including internal factors like genetics, or negative personality. External factors, substance misuse, or trauma and loss. Common triggers include alcohol or drug use, and medical problems long-term pain, cancer or even sleeping problems. Stressful life events, like getting laid off, abuse at home or on the job, neglect, family problems, death of a loved one, or divorce, can send someone spiraling into depression.

There are three main types of depression, major depression, atypical depression and Dysthymia. To be diagnosed with major depression, you must demonstrate 5 or more of the primary symptoms for at least two weeks. Atypical depression occurs in about a third of patients with depression, with symptoms including overeating, oversleeping, and feeling like you are weighed down. Dysthymia is a milder form of depression that can last for years if not treated. Other forms include the depression that is part of bipolar disorder, postpartum depression, occurring after a woman gives birth, Premenstrual dysphoric disorder, occurring 1 week before a woman's menstrual period and seasonal affective disorder, occurring in both males and females during the fall and winter seasons.

No matter what type of depression you have and how severe it is, some self-care steps can help. Get enough sleep if you can, exercise regularly, and follow a healthy, nutritious diet. Avoid alcohol and recreational drugs. Get involved in activities that make you happy and spend time with family and friends. If you are religious, talk to a clergy member. Consider meditation, tai chi, or other relaxation methods.

If you are depressed for 2 weeks or longer, contact your doctor or other health professional before your symptoms get worse. Treatment will depend on your symptoms. For mild depression, counseling and self-care may be enough. Either psychotherapy or antidepressant medicines may help, but they are often more effective when combined. Vigorous exercise and light therapy could offer significant benefit alone or in combination.

Healthy lifestyle habits can help prevent and treat depression, and reduce the chances of it coming back. Talk therapy and antidepressant medication can also make you less likely to become depressed again. In fact, talk therapy may help you through times of grief, stress, or low mood. In general, staying active, making a difference in the life of others, getting outside and keeping in close contact with other people is important for preventing depression.