How Much Fish Should You Eat to Benefit Your Brain?

The potency of the omega-3 vitamin, long thought to be the source of this beneficial effect, is now in doubt...

A new study confirms that eating fish once a week can help increase the size of your brain, especially areas associated with memory and cognition. But the potency of the omega-3 vitamin, long thought to be the source of this beneficial effect, is now in doubt. Conducted at UCLA and published in the American Journal of Preventative Medicine, the study analyzed data from 260 cognitively normal people, average age 78, who had answered diet questionnaires, had their blood levels of omega-3 fatty acids measured, and their brains scanned.

"The researchers found that weekly consumption of baked or broiled fish — but not fried fish — was associated with larger gray matter...including areas where amyloid plaques, a sign of Alzheimer’s disease, first appear. ... The results were the same regardless of omega-3 levels, suggesting that omega-3s were not the determining factor."

Eating fish more than once a week conferred no extra health benefits on those followed by the study. The lead author, Dr. Cyrus A. Raji, said that eating fish once a week and maintaining a healthy lifestyle were enough to realize all the potential cerebral benefits. "Physical activity, weight control, and so on — these factors influence the brain more than any supplement or any medicine," he said. "It’s much more in our control than we thought."

Read more at the New York Times

Photo credit: Shutterstock

LinkedIn meets Tinder in this mindful networking app

Swipe right to make the connections that could change your career.

Getty Images
Swipe right. Match. Meet over coffee or set up a call.

No, we aren't talking about Tinder. Introducing Shapr, a free app that helps people with synergistic professional goals and skill sets easily meet and collaborate.

Keep reading Show less

Space toilets: How astronauts boldly go where few have gone before

A NASA astronomer explains how astronauts dispose of their, uh, dark matter.

  • When nature calls in micro-gravity, astronauts must answer. Space agencies have developed suction-based toilets – with a camera built in to ensure all the waste is contained before "flushing".
  • Yes, there have been floaters in space. The early days of space exploration were a learning curve!
  • Amazingly, you don't need gravity to digest food. Peristalsis, the process by which your throat and intestines squeeze themselves, actually moves food and water through your digestive system without gravity at all.
Keep reading Show less

Steven Pinker's 13 rules for writing better

The Harvard psychologist loves reading authors' rules for writing. Here are his own.

NEW YORK, NY - JULY 21: Steven Pinker speaks onstage during OZY Fest 2018 at Rumsey Playfield, Central Park on July 21, 2018 in New York City. (Photo by Brad Barket/Getty Images for Ozy Media)
Personal Growth
  • Steven Pinker is many things: linguist, psychologist, optimist, Harvard professor, and author.
  • When it comes to writing, he's a student and a teacher.
  • Here's are his 13 rules for writing better, more simply, and more clearly.
Keep reading Show less

Can the keto diet help treat depression? Here’s what the science says so far

A growing body of research shows promising signs that the keto diet might be able to improve mental health.

Public Domain
Mind & Brain
  • The keto diet is known to be an effective tool for weight loss, however its effects on mental health remain largely unclear.
  • Recent studies suggests that the keto diet might be an effective tool for treating depression, and clearing up so-called "brain fog," though scientists caution more research is necessary before it can be recommended as a treatment.
  • Any experiments with the keto diet are best done in conjunction with a doctor, considering some people face problems when transitioning to the low-carb diet.
Keep reading Show less