Depression is treated with therapy, medication, lifestyle changes, or a combination of all three. The right approach depends on how severe your symptoms are, how long you’ve been experiencing them, and how you respond to initial treatment. Most people improve significantly with first-line options, though finding what works can take some patience.
Therapy: The First Option for Many People
For mild to moderate depression, talk therapy alone is often enough. The two most studied forms are cognitive behavioral therapy (CBT) and interpersonal therapy (IPT). Both produce large improvements in depressive symptoms, and head-to-head comparisons show no significant difference between them overall.
CBT focuses on identifying and changing patterns of negative thinking that feed depression. You learn to recognize distorted thoughts (“I always fail,” “Nothing will get better”) and practice replacing them with more realistic ones. IPT takes a different angle, working on your relationships and social functioning, since isolation and conflict are both triggers and consequences of depression. A typical course of either therapy runs 12 to 20 sessions.
One notable finding: when therapy is used without medication, CBT appears to outperform IPT. CBT also works better in individual sessions than in group settings, while IPT seems equally effective in either format. These distinctions can help you and a therapist choose the right fit.
Antidepressant Medication
For moderate to severe depression, or when therapy alone isn’t enough, antidepressants are a standard next step. The most commonly prescribed types are SSRIs and SNRIs. Both work by adjusting the balance of chemical messengers in the brain that regulate mood, but they do so through slightly different mechanisms. SSRIs target serotonin specifically, while SNRIs affect both serotonin and norepinephrine.
Doctors typically start at a low dose and increase gradually, usually adjusting every two weeks or so. This “start low, go slow” approach minimizes side effects, which are most common in the first couple of weeks. Nausea, headache, sleep changes, and appetite shifts are all typical early on and usually fade as your body adjusts.
The hardest part for many people is the timeline. Antidepressants take several weeks to reach full effectiveness. Some people notice subtle improvements in sleep or energy within the first week or two, but the full mood-lifting effect often takes four to six weeks. This delay is one of the most common reasons people stop medication too early, assuming it isn’t working.
If the first medication doesn’t help after six to eight weeks at an adequate dose, your doctor will typically try a different one. This trial-and-error process can feel frustrating, but it’s a normal part of finding the right match. Roughly one in three people responds well to the first antidepressant they try, and switching medications or adjusting the dose improves those odds considerably.
Combining Therapy and Medication
For more severe depression, combining therapy with medication is generally more effective than either one alone. The medication helps stabilize your brain chemistry enough to engage meaningfully in therapy, while therapy gives you tools to manage triggers and prevent relapse after you eventually taper off medication.
Interestingly, research on CBT shows that people who do therapy without concurrent medication sometimes see larger improvements than those doing both. This doesn’t mean medication is unhelpful. It likely reflects the fact that people on medication in studies tend to have more severe depression to begin with. The practical takeaway: if your depression is mild enough that your provider recommends therapy first, that’s a reasonable and well-supported plan.
Exercise and Diet
Physical activity has a measurable antidepressant effect, and it’s not a small one. The general recommendation is at least 150 minutes of moderate aerobic activity per week (think brisk walking, cycling, or swimming) or 75 minutes of vigorous activity (running, high-intensity interval training). You can also mix the two. Even 30 minutes of walking five days a week meets the threshold, and benefits start appearing before you hit that full target.
Exercise works through several pathways at once: it increases the production of mood-regulating brain chemicals, reduces inflammation, improves sleep quality, and builds a sense of accomplishment that directly counters the helplessness depression creates. It’s not a replacement for therapy or medication in severe cases, but as an add-on, it reliably boosts outcomes.
Diet plays a supporting role as well. People who follow a Mediterranean-style eating pattern, rich in vegetables, fruits, whole grains, fish, and olive oil, have roughly a 19% lower risk of developing depression compared to those who don’t. This association holds up across multiple large studies. You don’t need to overhaul your entire diet overnight. Adding more whole foods and reducing processed food, sugar, and alcohol is a reasonable starting point that supports both brain and body.
Measuring Your Progress
Depression severity is often tracked using a questionnaire called the PHQ-9, which scores symptoms on a scale from 0 to 27. A score of 0 to 4 means no depression. Scores of 5 to 9 indicate mild depression, 10 to 14 moderate, 15 to 19 moderately severe, and 20 to 27 severe. Your provider may have you fill this out at each visit to track whether treatment is working. A meaningful response is typically defined as your score dropping by at least 50%.
Tracking your own symptoms between appointments is useful too. Keeping a brief daily log of your mood, sleep, appetite, and energy level gives you and your provider concrete data to work with, rather than relying on how you remember feeling weeks ago.
When Standard Treatments Don’t Work
If at least two different antidepressants, each taken at the right dose for six to eight weeks, haven’t improved your symptoms, you may have what’s called treatment-resistant depression. This affects a significant minority of people with major depression, and it doesn’t mean nothing will work. It means the standard first-line approaches need to be supplemented or replaced.
Transcranial magnetic stimulation (TMS) is one option at this stage. It uses magnetic pulses directed at specific areas of the brain involved in mood regulation. Sessions happen five days a week for four to six weeks, and each one lasts anywhere from 3.5 to 20 minutes depending on the stimulation pattern used. You sit in a chair wearing earplugs while a magnetic coil is placed against your head. There’s no anesthesia, no sedation, and you can drive yourself home afterward. Most insurance policies cover TMS for depression, though they typically require documentation that previous medications didn’t work.
Ketamine-based treatments are another newer option for treatment-resistant cases. These are administered in a clinical setting, either as an IV infusion or a nasal spray, and can produce noticeable mood improvements within hours to days rather than weeks. The effects are temporary, so treatments are usually repeated on a set schedule, and they’re most effective when combined with ongoing therapy.
Preventing Relapse
Depression has a high recurrence rate. After a first episode, the chance of having another is roughly 50%, and that risk increases with each subsequent episode. This is why treatment doesn’t end the moment you feel better.
If you’re on medication, most guidelines recommend continuing it for at least six to twelve months after your symptoms resolve. Stopping too early is one of the most common causes of relapse. When the time comes to stop, tapering gradually under medical supervision prevents withdrawal symptoms and gives you a window to catch any returning depression early.
Therapy has a lasting protective effect that medication alone doesn’t always provide. The skills you learn in CBT or IPT continue working after sessions end, which is one reason therapy is particularly valuable for people with recurrent episodes. Maintaining regular exercise, strong social connections, consistent sleep habits, and a healthy diet all reduce your risk of another episode as well.