Common hair products linked to cancer risk, says breaking new study

Embracing signs of age might be the road to a longer life after all.

Common hair products linked to cancer risk, says breaking new study
Photo Source: LisaRedfern / Pixabay
  • New research found that hair dyes and chemical straighteners might significantly increase the risk of breast cancer.
  • According to the study, black women who used permanent dyes at least every 5-8 weeks raised their risk of developing cancer by 60 percent.
  • This isn't the first time beauty products have been found to contain cancerous chemicals.

Earlier this week, a disturbing report came out showing that permanent hair dye is heavily associated with cancer risk.

In a study published in the Journal of Cancer, findings show that hair dyes and chemical straighteners might significantly increase the risk of breast cancer. This is because they contain hormone-disrupting compounds and carcinogens that might be connected to the development of breast cancer, particularly in black women.

The link between hair products and cancer

Photo Source: ikeofspain / Flickr

While the link between breast cancer and permanent hair dye has been hypothesized in the past, prior findings had been inconclusive until now.

This new study looked at 46,709 women living in the United States between the ages of 35 and 74 between 2003 and 2009. Although none of the participants had breast cancer at the beginning of the study, all had at least one sister who had breast cancer and were, therefore, at elevated risk. Over the course of the study, 2,794 breast cancers were identified in the participants.

One of the most disturbing elements of the study was the stark contrast between the elevated risk of cancer between black women and white women who permanently dyed their hair. While past research on hair dye use and breast cancer risk had largely been limited to white women, this study found that black women who used permanent dyes at least every 5-8 weeks raised their risk of developing cancer by a shocking 60 percent compared to those who didn't. White women, on the other hand, raised their risk by only 8 percent. This might be because, as previous studies have shown, hair products that are designed for use by black women may contain more endocrine‐disrupting chemicals.

Additionally, women who used chemical straighteners at least every 5-8 weeks were 30 percent more likely to develop breast cancer. This was a cosmetic practice more commonly used by black women. The study found that 74 percent of black women had used chemical straighteners as opposed to 3 percent of white women. The researchers suggest that this could be because the treatment uses a concoction of chemicals that might include formaldehydea known carcinogen—as an active ingredient.

What the experts are saying

It's been estimated that more than a third of women past the age of 18 in the United States use hair dye. And hair products contain more than 5,000 chemicals, including some with properties that may disrupt hormones and cause genetic mutations.

Robin Dodson, a research scientist who studies environmental risks to women's health at the Silent Spring Institute, told The New York Times that most products that are on the market today are not sufficiently tested for safety, and that they aren't tested for additives that may disrupt the body's hormone production. Specifically, she's identified chemicals that imitate estrogen, which can fuel some types of breast cancer, in hair straighteners used more often by black women.

One of the authors of the study noted to the Times that the risks of dye use are still relatively small. Although the findings were more concerning for black women, this demographic only made up 9 percent of the study's participants, which is too small a sample size to know how real the risks are.

Embracing age to live longer

Ironically, adhering to certain values and beliefs that idolize youth may end up causing fatal illnesses that shorten life. Could the path of least resistance when it comes to signs of age be the road to longevity?

Fortunately, thanks in part to recent challenges to conventional beauty standards that have long fetishized youth, grey hair is trending right now. Take, for instance, Instagram accounts like @grombre, which celebrates women showing off their fresh new silver strands. Since embracing signs of added years rams into some deeply rooted cultural ideas about beauty and age, there's been a proliferation of online support groups and how-to blogs for women trying to transfer to an au naturale grey head of hair.

This isn't the first time beauty products have been found to contain cancerous chemicals. Back in 2015 a worrying report by the Breast Cancer Fund's Campaign for Safe Cosmetics found that some popular anti-aging creams use an ingredient called PFOA, a chemical linked to cancer and endocrine disruption.

There's a cultural irony at hand: Are certain markers of a youthful appearance worth more than actual years of life? Fighting the aging process is expensive, energy draining, time consuming, and arguably futile. Maybe it's time we prioritize the living part of life, rather than looking like we've lived less of it.

Massive 'Darth Vader' isopod found lurking in the Indian Ocean

The father of all giant sea bugs was recently discovered off the coast of Java.

A close up of Bathynomus raksasa

SJADE 2018
Surprising Science
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Volcanoes to power bitcoin mining in El Salvador

The first nation to make bitcoin legal tender will use geothermal energy to mine it.

Credit: Aaron Thomas via Unsplash
Technology & Innovation

This article was originally published on our sister site, Freethink.

In June 2021, El Salvador became the first nation in the world to make bitcoin legal tender. Soon after, President Nayib Bukele instructed a state-owned power company to provide bitcoin mining facilities with cheap, clean energy — harnessed from the country's volcanoes.

The challenge: Bitcoin is a cryptocurrency, a digital form of money and a payment system. Crypto has several advantages over physical dollars and cents — it's incredibly difficult to counterfeit, and transactions are more secure — but it also has a major downside.

Crypto transactions are recorded and new coins are added into circulation through a process called mining.

Crypto mining involves computers solving incredibly difficult mathematical puzzles. It is also incredibly energy-intensive — Cambridge University researchers estimate that bitcoin mining alone consumes more electricity every year than Argentina.

Most of that electricity is generated by carbon-emitting fossil fuels. As it stands, bitcoin mining produces an estimated 36.95 megatons of CO2 annually.

A world first: On June 9, El Salvador became the first nation to make bitcoin legal tender, meaning businesses have to accept it as payment and citizens can use it to pay taxes.

Less than a day later, Bukele tweeted that he'd instructed a state-owned geothermal electric company to put together a plan to provide bitcoin mining facilities with "very cheap, 100% clean, 100% renewable, 0 emissions energy."

Geothermal electricity is produced by capturing heat from the Earth itself. In El Salvador, that heat comes from volcanoes, and an estimated two-thirds of their energy potential is currently untapped.

Why it matters: El Salvador's decision to make bitcoin legal tender could be a win for both the crypto and the nation itself.

"(W)hat it does for bitcoin is further legitimizes its status as a potential reserve asset for sovereign and super sovereign entities," Greg King, CEO of crypto asset management firm Osprey Funds, told CBS News of the legislation.

Meanwhile, El Salvador is one of the poorest nations in North America, and bitcoin miners — the people who own and operate the computers doing the mining — receive bitcoins as a reward for their efforts.

"This is going to evolve fast!"

If El Salvador begins operating bitcoin mining facilities powered by clean, cheap geothermal energy, it could become a global hub for mining — and receive a much-needed economic boost in the process.

The next steps: It remains to be seen whether Salvadorans will fully embrace bitcoin — which is notoriously volatile — or continue business-as-usual with the nation's other legal tender, the U.S. dollar.

Only time will tell if Bukele's plan for volcano-powered bitcoin mining facilities comes to fruition, too — but based on the speed of things so far, we won't have to wait long to find out.

Less than three hours after tweeting about the idea, Bukele followed up with another tweet claiming that the nation's geothermal energy company had already dug a new well and was designing a "mining hub" around it.

"This is going to evolve fast!" the president promised.

How Pfizer and BioNTech made history with their vaccine

How were mRNA vaccines developed? Pfizer's Dr Bill Gruber explains the science behind this record-breaking achievement and how it was developed without compromising safety.

How Pfizer and BioNTech made history with their vaccine
Sponsored by Pfizer
  • Wondering how Pfizer and partner BioNTech developed a COVID-19 vaccine in record time without compromising safety? Dr Bill Gruber, SVP of Pfizer Vaccine Clinical Research and Development, explains the process from start to finish.
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  • The Pfizer-BioNTech COVID-19 Vaccine has not been approved or licensed by the Food and Drug Administration (FDA), but has been authorized for emergency use by FDA under an Emergency Use Authorization (EUA) to prevent COVID-19 for use in individuals 12 years of age and older. The emergency use of this product is only authorized for the duration of the emergency declaration unless ended sooner. See Fact Sheet:

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