Why You May Need to Re-Think Taking Those Fish Oil Supplements

iStock
iStock

Long touted as a key to improved cardiovascular health, increased cognition, and other benefits, omega-3 supplements are facing increasing scrutiny over whether they work as advertised. If recent critical investigation is correct, you might be enduring fish burps for little to no benefit.

Reviewing the new book The Omega Principle by Paul Greenberg in Slate, Irineo Cabreros breaks down the dilemma facing the $15 billion omega-3 supplement industry. A recent meta-analysis that looked at 79 studies involving more than 100,000 subjects found that omega-3 consumption had virtually no effect on common heart conditions. An earlier examination of studies compiled in 2012 also found that supplementing with omega-3s had no impact on whether a person died as a result of a cardiac event. Consumption also had no impact on overall mortality. Studies that have looked at fish oil’s benefits when it comes to psychiatric conditions like depression have been similarly inconclusive.

So why do we believe omega-3s are synonymous with better health? The notion originally stemmed from research into an Inuit population in Greenland in the 1970s. The Inuit had low incidences of heart problems and ate a lot of fatty fish. The conclusion was that their oily fish-based diets had protective effects on the heart. Ever since, supplement companies and consumers have associated fish oil, in liquid or capsule form, as having a host of cardiovascular benefits. But more contemporary research illustrates that the Inuit might simply metabolize their fish-heavy diet differently, leading to effects that can’t necessarily be replicated in a general population.

While fish oil may not improve heart health, it’s not likely to do you any harm. Unfortunately, the same may not hold true for the environment. According to Greenberg’s book, supplement companies typically draw the raw material for their products from large quantities of forage fish that are captured for their oil and agricultural value as fertilizer and animal feed—up to 27 tons annually. Forage species like anchovies and krill play a key role in the aquatic ecosystem: As prey species, they transmit solar energy from plankton to larger carnivorous fish. If companies continue to winnow their population, it’s possible their absence could have unintended and unpredictable effects on food chains. Greenberg argues that continuing to weaken fish populations for supplements of dubious value may be something we’ll come to regret.

In the meantime, one thing experts can agree on is that eating actual fish is good for your body. The American Heart Association recommends eating two 3.5-ounce servings of fish like salmon, mackerel, herring, and albacore tuna weekly.

[h/t Slate]

From Cocaine to Chloroform: 28 Old-Timey Medical Cures

YouTube
YouTube

Is your asthma acting up? Try eating only boiled carrots for a fortnight. Or smoke a cigarette. Have you got a toothache? Electrotherapy might help (and could also take care of that pesky impotence problem). When it comes to our understanding of medicine and illnesses, we’ve come a long way in the past few centuries. Still, it’s always fascinating to take a look back into the past and remember a time when cocaine was a common way to treat everything from hay fever to hemorrhoids.

In this week's all-new edition of The List Show, Mental Floss editor-in-chief Erin McCarthy is highlighting all sorts of bizarre, old-timey medical cures. You can watch the full episode below.

For more episodes like this one, be sure to subscribe here.

Game of Thrones Star Sophie Turner Opened Up About Her Struggles With Depression

Helen Sloan, HBO
Helen Sloan, HBO

Playing one of the main characters on the most popular show currently on television isn't always as glamorous as it seems. Sometimes, the pressures of fame can be too much. Sophie Turner realized this while playing Sansa Stark on Game of Thrones, and has recently revealed how being in the public eye took a toll on her mental health.

Turner took on the role of Sansa Stark in 2011, when she was just a teenager, and she quickly became a household name. Now, at 23, she's come forward to Dr. Phil on his podcast Phil in the Blanks to explain how negative comments on social media affected her self-image and mental health.

"I would just believe it. I would say, ‘Yeah, I am spotty. I am fat. I am a bad actress.' I would just believe it," Turned explained. "I would get [the costume department] to tighten my corset a lot. I just got very, very self-conscious."

Later on, these feelings led to major depression. Turner developed a sense of isolation after she realized that all of her friends and family were going off to colleege while she was pursuing a sometimes-lonely acting career.

"I had no motivation to do anything or go out. Even with my best friends, I wouldn't want to see them, I wouldn't want to go out and eat with them," Turner explained. "I just would cry and cry and cry over just getting changed and putting on clothes and be like, 'I can't do this. I can't go outside. I have nothing that I want to do.'"

The feelings of depression stayed with Turner for most of the time she was filming Game of Thrones, and it's a battle she's still fighting. "I've suffered with my depression for five or six years now. The biggest challenge for me is getting out of bed and getting out of the house. Learning to love yourself is the biggest challenge," she continued.

The actress shared that she goes to a therapist and takes medication for her depression—two things that have helped her feel better.

Between Game of Thrones ending and planning her wedding to fiancé Joe Jonas, Turner may not have the time to take on many new acting roles in the near future. However, we'll continue to see her as Sansa Stark in the final season of Game of Thrones, and as Jean Grey in Dark Phoenix, which hits theaters on June 7.

[h/t: E! News]

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