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Expand chart
Note: Some totals don't add to 100% due to rounding; Data: SurveyMonkey poll of 2,360 U.S. adults conducted May 5-8, 2019 with a margin of error of ±3 percentage points. Poll methodology; Chart: Axios Visuals

Memory supplements claiming to ward off cognitive decline abound but there is so far little evidence they're effective.

The big picture: The business of memory supplements — from branded regimens to vitamins — pulled in $3.2 billion globally in 2016.

"People are willing to pay and do anything to preserve their brains ... but we don’t have the knowledge yet to give really effective interventions that change that trajectory as much as people think."
— Joanna Hellmuth, neurologist, University of California, San Francisco

"The problem is that a lot of the interventions being marketed directly to consumers don’t do rigorous studies of the outcomes," says Hellmuth, who recently wrote about the "rise of pseudomedicine" for brain health.

  • There are also questions about the safety of supplements, the Wall Street Journal reports.
  • The Food and Drug Administration recently cited 17 companies for illegally selling products "that claim to prevent, treat or cure Alzheimer’s disease and a number of other serious diseases and health conditions."

Go deeper:

Go deeper

14 mins ago - Health

Internal CDC presentation warns: "The war has changed"

Graphic: CDC via The Washington Post

Unpublished research indicates that the Delta variant causes more severe illness and spreads as easily as chickenpox, and that vaccinated people may transmit the strain as easily as those who are unvaccinated, according to an internal CDC presentation obtained by WashPost.

Why it matters: The data played a key role in the CDC's decision to tell vaccinated people to resume masking indoors, with the presentation calling on health officials to "acknowledge the war has changed," The Post reports.

Updated 17 mins ago - Sports

Olympics dashboard

Women's 5,000 meter heats at the Tokyo Olympics. Photo: Jewel Samad/AFP via Getty Images

🎾: Novak Djokovic defeated in Olympic semi-finals

🗓: The Olympic events to watch today

🏊‍♀️: South Africa's Tatjana Schoenmaker breaks world record in 200m breaststroke

🏊: Olympic swimmer Ryan Murphy wins Silver in 200m

🚣‍♀️: Team USA women's eight rowing fails to reach the podium

💻: Japan tests teleporting games and "remote cheering"

Go deeper: Full Axios coverage

Exclusive: Lawmakers urge probe into DOJ's alleged racial profiling of Asians

U.S. Attorney General Merrick Garland. Photo: Win McNamee/Getty Images/Bloomberg via Getty Images

Nearly 100 members of Congress members urged Attorney General Merrick Garland to investigate the Justice Department's alleged racial profiling of Asians, according to a letter shared with Axios.

Why it matters: The case of Anming Hu, a scientist who was baselessly targeted in an espionage probe, has renewed scrutiny of the DOJ after an FBI agent admitted to falsely implicating the Chinese Canadian.

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