Is Mental Illness Increasing in the US? The Data

Yes, mental illness is increasing in the United States by nearly every available measure. Before the pandemic, about 10.8% of Americans reported symptoms of anxiety or depression. During the recovery period from mid-2023 through early 2024, that figure sat at 29.5%, nearly triple the pre-pandemic baseline. While some of this rise reflects greater willingness to seek help and more sensitive screening, the scale of the increase points to a genuine and sustained shift in the mental health of the population.

How Much Have Rates Changed?

The sharpest spike came during the first year of the COVID-19 pandemic, when 37.6% of Americans reported symptoms of anxiety or depression in the Census Bureau’s Household Pulse Survey. That number has improved since then, settling around 29.5% in the 2023-2024 recovery period. The improvement is real, but the gap between where things stand now and the 10.8% pre-pandemic rate is enormous. Rates have not returned to anything close to normal.

Depression specifically affects an estimated 21 million American adults, or 8.3% of the adult population, based on the most recent federal survey data. Among adolescents aged 12 to 17, the picture is more alarming: roughly 5 million, or 20.1%, experienced at least one major depressive episode in a single year. One in five teenagers meeting the threshold for a depressive episode is not a statistical blip.

Suicide data tells a parallel story. Over 49,000 people died by suicide in 2023, with a rate of 14.1 per 100,000. Suicide rates climbed 37% between 2000 and 2018, dipped 5% from 2018 to 2020, then rebounded to their peak by 2022. The brief decline turned out to be temporary rather than a turning point.

Young People Are Hit Hardest

The increase in mental illness has been most dramatic among adolescents and young adults. Among high school students, 53% of girls and 28% of boys report persistent feelings of sadness or hopelessness, the kind of depressive symptoms that interfere with daily life. For LGBTQ+ students, that number reaches 65%. These aren’t fleeting bad moods. The CDC uses a threshold that captures symptoms lasting two or more weeks and disrupting regular activities.

Suicidal behavior follows the same pattern. Thirteen percent of female high school students and 6% of male students attempted suicide. Among LGBTQ+ students, 20% attempted suicide, more than three times the rate for heterosexual students. Hispanic students (11%) and Black students (10%) also showed higher rates of attempts compared to white students (8%).

Social media use appears to be one driver. A large longitudinal study of over 6,500 adolescents aged 12 to 15 found that those spending more than three hours a day on social media faced double the risk of poor mental health outcomes, including depression and anxiety symptoms. That study controlled for baseline mental health, meaning the social media use preceded the symptoms rather than the other way around. A smaller randomized trial found that limiting social media to 30 minutes a day for three weeks produced significant improvements in depression severity. The U.S. Surgeon General issued a formal advisory on the connection, a step typically reserved for urgent public health concerns.

The Pandemic Accelerated an Existing Trend

It would be easy to blame everything on COVID-19, but the trend lines were climbing well before March 2020. Suicide rates rose steadily for nearly two decades. Adolescent depression was increasing throughout the 2010s. What the pandemic did was pour fuel on a fire that was already burning, through isolation, economic disruption, grief, disrupted routines, and loss of access to care.

The aftermath has been stubbornly persistent. Nearly three times as many Americans report anxiety or depression symptoms now compared to 2019. Some groups were hit harder than others. The Household Pulse Survey data shows that while national rates improved from the pandemic peak, every demographic subgroup remains well above its pre-pandemic baseline. The mental health burden of the pandemic did not end when the public health emergency did.

Are People Just More Willing to Report It?

This is one of the most common counterarguments, and it holds partial truth. Stigma reduction efforts, particularly in schools and workplaces, have measurably increased people’s willingness to seek help. A review of 25 anti-stigma programs found that 72% improved help-seeking intentions among participants. When people feel less shame about mental health struggles, they’re more likely to disclose symptoms on surveys and show up in clinical data. This means some of the increase in reported mental illness reflects better detection of problems that were always there.

But this explanation has limits. The tripling of anxiety and depression symptoms between 2019 and the pandemic period happened in under two years, far too fast to be explained by gradual shifts in stigma or diagnostic practices. Suicide deaths, which are counted through medical examiner records rather than self-report, show the same upward trajectory. You can’t attribute a 37% increase in suicide rates over two decades to changes in reporting. The convergence of self-reported data, clinical records, and mortality statistics all pointing in the same direction makes a strong case that the increase is real.

Who Gets Treatment and Who Doesn’t

Rising rates of mental illness would be less concerning if treatment were keeping pace. It isn’t. Among adults with any mental illness, 48% did not receive treatment in the past year, according to the most recent national survey from SAMHSA. Among those with serious mental illness, the kind that substantially interferes with major life activities, 30% went untreated.

The gap is wider for young people dealing with multiple issues. Among adolescents who had both a major depressive episode and a substance use disorder, 27.9% received no treatment at all, and only 18.1% received care for both conditions. Even for adolescents with depression alone, 40% went without treatment.

Racial and ethnic disparities make the treatment gap worse. Among adults who meet diagnostic criteria for a mental health or substance use condition, 37.6% of white Americans receive treatment, compared to just 22.4% of Latino Americans and 25% of Black Americans. This isn’t because minority groups have higher rates of mental illness. In fact, most research finds that Black and Hispanic Americans have equal or lower lifetime rates of mental disorders compared to white Americans. The disparity is in access, not prevalence. When Black Americans do develop depression, their episodes tend to be more persistent, a pattern consistent with delayed or inadequate treatment rather than a biological difference.

What’s Driving the Increase

No single factor explains the rise. The evidence points to several forces converging at once. Social media use, particularly among young people spending three or more hours daily, is linked to doubled risk of depression and anxiety. Economic instability, including housing costs and wage stagnation, creates chronic stress. The pandemic disrupted social connections, routines, and access to care on a massive scale. The opioid crisis and rising substance use overlap heavily with mental health conditions, and the two often go untreated together.

Loneliness has emerged as its own risk factor. The Surgeon General issued a separate advisory on the epidemic of loneliness and isolation in 2023, noting health consequences comparable to smoking 15 cigarettes a day. Americans report fewer close friendships, less community involvement, and more time alone than in previous decades. These aren’t just lifestyle changes. Social disconnection directly affects stress hormones, immune function, and the brain’s reward systems in ways that increase vulnerability to depression and anxiety.

The workforce shortage in mental health care compounds everything. Even when people do seek help, wait times for a therapist or psychiatrist can stretch weeks or months, particularly in rural areas. The treatment gap isn’t just about willingness to seek care. For millions of Americans, the care simply isn’t available when they need it.