How to Manage Anxiety: What the Research Evidence Shows

Anxiety is one of the most common mental health complaints, and it is also one of the most studied. Over the past two decades, researchers at U.S. government health agencies and major medical centers have tested specific techniques against placebo, medication, or no treatment at all. The findings converge on a handful of approaches with measurable effects — and they also show that not every popular method holds up equally well under scientific scrutiny.

Cognitive behavioral therapy: the first-line approach

The National Institute of Mental Health (NIMH) describes exposure-based cognitive behavioral therapy (CBT) as a short-term, skills-focused treatment that teaches people to identify anxious thought patterns and gradually face the situations that trigger them. In a 2024 NIMH-funded study, 69 unmedicated children with anxiety disorders underwent 12 weeks of CBT while researchers tracked brain activity with fMRI scans before and after treatment. The children initially showed overactivation in frontal, parietal and amygdala brain regions compared with 62 non-anxious peers. After CBT, most of these regions normalized to levels at or below those of the non-anxious group, and the children showed what researchers called a clinically significant decrease in anxiety symptoms and improved functioning. Eight regions, including the right amygdala, remained overactive even after treatment, suggesting some emotional-processing circuits may need longer or additional intervention.

Mindfulness-based stress reduction: comparable to medication in one trial

Mindfulness-based stress reduction (MBSR), an eight-week structured program combining meditation, body awareness and gentle movement, has been tested directly against a standard anxiety medication. In a randomized clinical trial led by Elizabeth Hoge, MD, at Georgetown University Medical Center, 276 adults with diagnosed anxiety disorders were recruited from hospitals in Boston, New York City and Washington, D.C., between June 2018 and February 2020. Participants were randomly assigned to either weekly 2.5-hour MBSR classes plus a daylong retreat and home practice, or to the antidepressant escitalopram. Blinded evaluators assessed anxiety severity at baseline, eight weeks, and at 12- and 24-week follow-ups on a standard severity scale. Among the 102 people who completed MBSR and 106 who completed medication, both groups showed statistically equivalent reductions in anxiety severity — roughly a 30% drop from baseline scores near 4.5 on a 7-point scale. The results were published in JAMA Psychiatry in November 2022. Hoge noted a practical implication of the finding: mindfulness instruction does not require a clinician's degree to teach, unlike prescribing medication.

The U.S. National Center for Complementary and Integrative Health (NCCIH) reviewed this and other trials and concluded that meditation programs show moderate evidence of improving anxiety and depression, based on a 2014 meta-analysis of 47 trials involving 3,515 participants. A separate 2021 trial of 108 adults found that both MBSR and cognitive behavioral group therapy produced long-term benefits for social anxiety.

Breathing and relaxation exercises: what the evidence supports

NCCIH's consumer guidance describes several relaxation techniques with varying levels of supporting evidence: progressive muscle relaxation, autogenic training, guided imagery, biofeedback-assisted relaxation, self-hypnosis, and diaphragmatic (slow, deep) breathing. A 2019 review of three studies totaling 880 participants found preliminary evidence that diaphragmatic breathing exercises may reduce stress, with positive changes in mental health self-ratings and in physical markers such as cortisol levels and blood pressure. A 2018 review of 16 studies and 856 participants found relaxation therapy reduced symptoms of anxiety, depression, phobia and worry, and in some comparisons performed better than CBT. A separate 2018 review of 50 studies and 2,801 participants found no difference between relaxation therapy and CBT for generalized anxiety disorder, panic disorder, social anxiety disorder or specific phobias, though in that same review relaxation therapy appeared less effective than CBT for post-traumatic stress disorder and obsessive-compulsive disorder.

NCCIH states that relaxation techniques are generally considered safe for healthy people, with no reported negative side effects in most research studies, though it notes rare cases of increased anxiety or intrusive thoughts, and advises caution for people with epilepsy, certain psychiatric conditions, or a history of trauma.

A free, evidence-informed self-help structure from WHO

The World Health Organization publishes "Doing What Matters in Times of Stress," a free illustrated guide for managing stress. According to WHO's publication page, the guide is informed by evidence and extensive field testing and is designed so a few minutes of daily practice is enough to use its self-help techniques. It is aimed at anyone experiencing stress, regardless of circumstances, and is available in more than 40 languages with accompanying audio exercises.

Steps for putting the evidence into practice

1. Start with diaphragmatic (slow, deep) breathing when anxiety spikes — NCCIH-reviewed studies link it to short-term reductions in self-reported stress and in physical markers like cortisol and blood pressure.
2. If anxiety is frequent or interferes with daily life, consider CBT with a licensed clinician; NIMH-funded research links it to measurable, clinically significant symptom reduction.
3. Consider an eight-week MBSR course as an option alongside or instead of medication, as tested in the Georgetown-led JAMA Psychiatry trial — but discuss any change to existing treatment with a health professional first.
4. Try a structured, free self-help resource such as WHO's "Doing What Matters in Times of Stress" guide for daily practice between or alongside professional sessions.
5. Treat yoga as a possible add-on rather than a primary treatment for a diagnosed anxiety disorder: an NCCIH-reviewed 2018 meta-analysis of eight yoga studies found short-term benefits for anxiety symptoms in general, but no benefit once the analysis was restricted to people with diagnosed anxiety disorders. NCCIH describes evidence on tai chi for anxiety as more limited and inconsistent.
6. Seek a clinical evaluation if symptoms are severe, persistent, or affecting work, relationships or daily functioning — self-help techniques are not a substitute for diagnosis and professional treatment.

Limits of the current evidence

NCCIH's own reviewers note weak-to-moderate methodological quality across many yoga studies and a high risk of bias in some relaxation-therapy research for PTSD, meaning findings should be read as encouraging rather than conclusive for every technique. Effects also vary by whether someone has a diagnosed anxiety disorder or is a generally healthy person managing everyday stress — several reviewed studies found techniques that help with everyday stress did not show the same benefit once restricted to people with clinical anxiety diagnoses.