Illustration: Axios Visuals/Sarah Grillo

Roughly 25% of youths experience depression, anxiety, poor sleep and high stress due to "problematic smartphone use," according to new research published Friday in BMC Psychiatry.

Why it matters: The report says that how young people use smartphones — in ways that mimic behavioral addiction — could be more harmful for mental health than the phones themselves.

What they found: 17 to 19 year olds are the most frequent sufferers of problematic smartphone use, as found by over a dozen studies cited in the report, and those users said that social networking was the most important part of using a smartphone.

  • Loneliness and low self-esteem were also found to be associated with addictive or problematic smartphone use.
  • Both risk-taking and risk avoidant characteristics were associated with poor smartphone use — like low self-control, emotional instability, impulsivity, and perfectionism.

Methodology: The final report used 41 studies out of the 924 it analyzed, which included over 40,000 children and young people — an age range of those with a mean population of no greater than 25. Researchers used studies from 2011 to 2017 and no language restrictions were applied.

Go deeper: The growing war on tech addiction

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Updated 43 mins ago - Politics & Policy

Coronavirus dashboard

Illustration: Annelise Capossela/Axios

  1. Global: Total confirmed cases as of 10:30 p.m. ET: 20,532,835 — Total deaths: 747,845— Total recoveries: 12,743,275Map.
  2. U.S.: Total confirmed cases as of 10:30 p.m. ET: 5,193,266 — Total deaths: 165,934 — Total recoveries: 1,714,960 — Total tests: 63,252,257Map.
  3. Politics: Pelosi says Mnuchin told her White House is "not budging" on stimulus position.
  4. Business: U.S. already feeling effects of ending unemployment benefits.
  5. Public health: America's two-sided COVID-19 response America is flying blind on its coronavirus response.
  6. Education: New Jersey governor allows schools to reopenGallup: America's confidence in public school system jumps to highest level since 2004.
Updated 1 hour ago - Health

World coronavirus updates

Data: The Center for Systems Science and Engineering at Johns Hopkins; Map: Axios Visuals

France reported more than 2,500 new COVID-19 cases in 24 hours — the largest single-day number since May. French officials said the situation was "clearly worsening," per France 24.

By the numbers: Over 745,600 people have died of the novel coronavirus globally and over 20.4 million have tested positive, per Johns Hopkins. Almost 12.7 million have recovered from the virus.

1 hour ago - Health

U.S. reports 1,485 coronavirus deaths in a single day

Healthcare workers handling coronavirus tests in Los Angeles on August 11. Photo: Mario Tama/Getty Images

The U.S. reported 1,485 deaths due to the coronavirus on Wednesday, COVID Tracking Project data shows.

Why it matters: It's the highest single-day COVID-19 death toll since May 15, when the country reported 1,507 deaths. The U.S. has seen a total of 157,758 deaths from the virus.