Therapy for Anxiety: CBT and Treatments With the Best Evidence

Cognitive behavioral therapy (CBT) is the therapy for anxiety with the deepest evidence base. A 2025 JAMA Psychiatry series of meta-analyses pooled 375 trials and 32,968 patients across mental disorders and found large effects for panic disorder, social anxiety disorder and generalized anxiety disorder^[1].

NIMH describes CBT as the “gold standard” choice of psychotherapy for generalized anxiety disorder^[7]. How common anxiety disorders are is tracked on our pillar page; this guide covers which therapies work, how well, and for whom.

Compared with a waitlist, CBT produced effect sizes of 1.02 for generalized anxiety disorder, 1.00 for panic disorder and 0.95 for social anxiety disorder^[1]. Against care as usual, the effects were roughly half as large: 0.50 for generalized anxiety disorder and 0.56 for panic disorder^[1].

Placebo-controlled trials give the most conservative read. A 2018 meta-analysis of 41 trials with 2,835 patients found a moderate effect of CBT over placebo (g = 0.56), and the odds of responding were 2.97 times higher with CBT^[2].

That review found large effects for generalized anxiety disorder (g = 1.01) but small to moderate effects for social anxiety disorder (0.41) and panic disorder (0.39), and concluded that more effective treatments are needed for those conditions^[2]. The 2025 series also rated the overall quality of the evidence as limited, citing risk of bias, heterogeneity and possible publication bias^[1].

CBT for anxiety combines two kinds of work. The cognitive part targets automatic thoughts that are inaccurate or harmful, and the behavioral part changes the self-defeating patterns that keep worry going^[7].

Avoidance is the main behavioral target. The American Psychological Association notes that avoiding feared objects or situations can reduce fear in the short term but make it worse over the long term^[8].

Exposure therapy breaks that cycle by having a person face what they fear in a safe setting. APA lists phobias, panic disorder, social anxiety disorder, obsessive-compulsive disorder and generalized anxiety disorder among the problems it helps treat^[8].

Exposure takes three main forms: in vivo (facing the situation in real life), imaginal (vividly imagining it) and interoceptive (deliberately bringing on harmless body sensations, such as a racing heart in panic disorder)^[8].

Courses are short and structured. In the Child/Adolescent Anxiety Multimodal Study, CBT meant 14 sessions of 60 minutes over 12 weeks^[4]. In a 2017 adult trial, patients received up to 16 sessions over 16 to 21 weeks^[9].

Acceptance and commitment therapy

Acceptance and commitment therapy (ACT) is the main alternative NIMH describes for generalized anxiety disorder. Instead of disputing thoughts, it encourages nonjudgmental acceptance of them and uses mindfulness and goal setting^[7].

NIMH describes the research base for ACT as growing rather than established^[7].

On average, the benefit holds through the first year. A 2020 JAMA Psychiatry meta-analysis of 69 randomized trials and 4,118 patients found CBT was associated with lower anxiety than control conditions up to 12 months after treatment ended^[3].

Past the first year, the evidence thins. Effects remained significant for generalized anxiety disorder (g = 0.22), social anxiety disorder (0.42) and PTSD (0.84), but not for panic disorder, and too few studies existed to estimate effects for specific phobia or OCD^[3].

Only 6 trials reported relapse after successful treatment, mostly in panic disorder, with relapse rates of 0% to 14% at 3 to 12 months^[3]. The authors called for more trials with longer follow-up^[3].

Dropout varies by condition. In placebo-controlled trials, more patients dropped out of CBT than placebo in PTSD studies (29.0% vs. 17.2%), with no difference for the other disorders^[2]. Trauma-focused options are compared in our guide to PTSD treatment options.

CBT for anxiety also moves depression symptoms. In placebo-controlled anxiety trials, CBT reduced depression with a small effect (g = 0.31)^[2]. For depression itself, CBT compared with a waitlist produced an effect size of 1.00 across 63 trials^[1].

Transdiagnostic CBT uses one protocol for the processes shared by anxiety and depression. The best-studied version, the Unified Protocol, is built from 5 core modules meant to cover the full range of emotional disorders^[9].

In a 2017 randomized trial of 223 adults, the Unified Protocol reduced symptoms as much as disorder-specific CBT protocols for four anxiety disorders, both at the end of treatment and 6 months later^[9]. More patients finished it: 87.5% completed the Unified Protocol vs. 69.2% for single-disorder protocols^[9].

Among patients assessed at the end of treatment, 61.9% in the Unified Protocol group no longer met criteria for any emotional disorder, compared with 47.4% with single-disorder protocols and 12.5% on the waitlist^[9]. Those diagnostic outcomes were exploratory, and the trial ran at a single outpatient center^[9].

Treatment for anxiety means psychotherapy, medication or both. For generalized anxiety disorder, NIMH lists CBT and ACT alongside SSRIs, SNRIs, benzodiazepines and buspirone^[7]. Drug classes and trial results are covered in our guide to anxiety medication.

Timing differs. SSRIs and SNRIs may take several weeks to start working, and buspirone needs 3 to 4 weeks to be fully effective^[7]. Benzodiazepines can lower anxiety rapidly, but tolerance and dependence mean prescribers may limit them to brief periods^[7].

Direct comparisons in adults are scarce. A 2019 meta-analysis of 79 trials and 11,002 people with generalized anxiety disorder found a medium to large effect for psychotherapy (g = 0.76) and a small effect for medication (g = 0.38)^[10].

The authors cautioned against comparing the two figures directly, because medication trials more often used placebo controls than psychotherapy trials did^[10].

Therapy for anxiety in kids and teens

The clearest head-to-head test comes from children: the Child/Adolescent Anxiety Multimodal Study randomized 488 children aged 7 to 17 to CBT, sertraline, both, or placebo for 12 weeks^[4].

Combination treatment had the highest response rate, while CBT alone and sertraline alone did not differ significantly^[4]. A 2020 Cochrane review of 87 studies and 5,964 young people found CBT probably increases remission compared with a waitlist but found little evidence that it outperforms usual care or alternative treatments^[11]. Broader context is in our children's mental health statistics.

NIMH states that psychotherapy can be effective whether delivered in person or virtually via telehealth^[7].

A 2023 World Psychiatry meta-analysis of 31 randomized trials compared therapist-supported internet CBT with face-to-face CBT across 16 conditions^[5]. The pooled difference was g = 0.02, meaning the two formats produced similar effects^[5].

Half of those trials covered depression or an anxiety disorder^[5]. Because every program tested included therapist support, the result does not speak to unguided self-help apps. Adoption data for apps is in our mental health apps statistics.

Counseling is the prevention approach with the strongest evidence during pregnancy and after birth. In 2019, the U.S. Preventive Services Task Force issued a grade B recommendation that clinicians provide or refer pregnant and postpartum people at increased risk of perinatal depression to counseling interventions^[12].

The counseling studied was mainly CBT and interpersonal therapy, and it was associated with a 39% lower likelihood of perinatal depression (pooled relative risk 0.61)^[12]. The task force found limited or mixed evidence for physical activity, education, medication and dietary supplements as prevention^[12].

For treatment, the American College of Obstetricians and Gynecologists' 2023 guideline recommends that obstetricians start medication for perinatal depression or anxiety disorders, refer to behavioral health care, or both^[13].

The same guidance recommends against withholding or stopping mental health medication because of pregnancy or lactation alone, and calls for a validated screening tool to track response^[13]. Rates are on our postpartum depression and postpartum population pages.

In 2024, 14.0% of U.S. adults received counseling or therapy from a mental health professional in the past 12 months, and 19.3% took prescription medication for their mental health, according to the National Health Interview Survey^[6].

Women were more likely than men to receive therapy (16.9% vs. 10.9%)^[6]. Adults 18 to 29 had the highest rate at 20.2%, compared with 5.0% of adults 75 and older^[6].

These figures cover therapy for any mental health reason, not anxiety alone. Prices are covered in our analysis of the cost of therapy, and provider supply in therapist shortage statistics.