Chemicals found in shampoo and deodorants linked to early puberty in girls

Early Puberty for Girls Linked to Personal Care Products

Girls exposed to chemicals commonly found in toothpaste, makeup, soap and other personal care products before birth may hit puberty earlier, according to a new longitudinal study led by researchers at UC Berkeley.

Researchers studied 388 children in California who were taking part in a long-term study.

'This is an important issue to address as earlier puberty in girls increases their risk of mental health problems and risk-taking behaviour as teenagers - as well as breast and ovarian cancer over the longer term. The same trend was not observed in boys.

Diethyl phthalate is often used as a stabilizer in fragrances and cosmetics.

It is added to antibacterial soaps, body washes, toothpastes and cosmetics, as well as some clothing, furniture and toys.

Prof Harley said: "But we always knew we would have the opportunity to examine other chemical exposures".

Notably, the study found no association between exposure to these chemicals and the puberty development in boys. Chemicals that have been implicated include phthalates, which are often found in scented products like perfumes, soaps and shampoos; parabens, which are used as preservatives in cosmetics; and phenols, which include triclosan.

The research, published in the journal Human Reproduction, also found links with propyl paraben - which is used in perfumes - and chlorine-containing chemicals, which appear in cosmetics in the United States but are only for industrial use in Britain. There, they tested 179 girls and 159 boys in California born to mothers pregnant between 1999 and 2000.

NASA's spacecraft arrives at asteroid Bennu
NASA scientists suspect Bennu might contain bounties of valuable resources that can be used for future deep space exploration. The arm has a full range of motion, with joints capable of movement comparable to shoulder, elbow and wrist joints.

Google is shutting down Allo by March 2019
In 2017, the head of Allo left Google for Facebook, and shortly thereafter most of the Allo team moved over to Android Messages . One thing seems to be sure: if you use either of these apps, it's time to switch to something else.

Thousands of O2 users stuck offline in mobile phone blackout
Mobile network O2 has said it is investigating a technical fault that has left thousands of mobile customers unable to get online. It has 25 million direct customers, but also provides services for the Sky, Tesco, Giffgaff and Lycamobile networks.

There is growing concern among some researchers about the effects... They tested mothers' urine during pregnancy and interviewed them about potential chemical exposures, then tested kids' urine for chemical exposure at 9 years old and examined children for signs of puberty development every nine months between ages 9 and 13 years.

Boys' puberty timing didn't appear to be influenced by prenatal exposure to these chemicals.

For every doubling in concentration of a phthalate indicator in mothers' urine, their daughters developed pubic hair an average of 1.3 months earlier, the study found.

In addition, girls who had higher concentrations of parabens in their urine at age nine also experienced puberty at younger ages.

"This is important because we know that the age at which puberty starts in girls has been getting earlier in the last few decades; one hypothesis is that chemicals in the environment might be playing a role, and our findings support this idea".

Harley added that there are many steps that can be taken if women want to reduce their exposure to these chemicals.

"There has been increasing awareness of chemicals in personal care products and consumer demand for products with lower levels of chemicals", Harley said.

Phthalates, parabens and triclosan are not banned for use in personal care products, and there isn't solid evidence yet that they cause health effects in humans, Harley said by email. Kim G Harley Kimberly P Berger Katherine Kogut Kimberly Parra Robert H Lustig Louise C Greenspan Antonia M Calafat Xiaoyun Ye Brenda Eskenazi.

Related:

  • 2.0 enters Rs 500 crore club in worldwide box office collections

    2.0 enters Rs 500 crore club in worldwide box office collections

    Trade analyst and film critics Ramesh Bala took to his official Twitter handle to share the latest figures of the superhit 2.0. The film is one of the most expensive Indian film which also is a standalone sequel to 2010's Enthiran .
    9-year-old boy persuades USA  town to revoke snowball ban

    9-year-old boy persuades USA town to revoke snowball ban

    The family are said to be now looking at the town's other unusual laws - including one that only recognises cats and dogs as pets. While Dane could very well have a future as a politician or attorney, he's told his parent's he wants to play in the NFL.
    Tom Cruise is Worried You're Watching Movies at Home Wrong

    Tom Cruise is Worried You're Watching Movies at Home Wrong

    Different TV makers call it by different names, including Sony's MotionFlow , Samsung's Auto Motion Plus and LG's TruMotion . We'll be honest, this isn't what we expected of the first video from the long-awaited Top Gun sequel .
  • IOS 12.1.1 fixes FaceTime’s biggest frustration

    IOS 12.1.1 fixes FaceTime’s biggest frustration

    If you upgraded to iOS 12 .1.1, let us know how your experience is with the update so far in the comments section below. The app introduced a menu tray which, in turn, hid the toggle to switch between the iPhone's two cameras.
    Kenya: Jeff Oluoch Leaves Sevens Camp Ahead of Cape Town 7s

    Kenya: Jeff Oluoch Leaves Sevens Camp Ahead of Cape Town 7s

    Blitzboks coach Neil Powell named the same 12-man squad from last weekend to front up at the Cape Town Stadium on Saturday.
    Priyanka responds to The Cut article, calling it

    Priyanka responds to The Cut article, calling it "random things"

    It must say Both looked simply ideal together and here are some more many inside photos of both ceremonies. We've received dozens of messages from readers expressing their anger. "The whole piece missed the mark".
  • Prince William and Kate bring gifts to RAF base in Cyprus

    Prince William and Kate bring gifts to RAF base in Cyprus

    He said: "He saw I had some in my hand and he had a little mischievous nod and wink and looked like he wanted one to throw back at us".
    Putin: Success in Oil Production Cuts Due to Saudi Arabia

    Putin: Success in Oil Production Cuts Due to Saudi Arabia

    Gasoline stocks fell by 764,000 barrels, compared with analysts' expectations for a 640,000-barrel gain. Wise stated that that would depend on the severity of cuts adopted by OPEC and its allies.
    Trump asks Opec not to cut production

    Trump asks Opec not to cut production

    They'd like to see lower gasoline prices at the pumps, because that's important for votes in the United States." . Trump wrote in a tweet ahead of the group's meeting this week to discuss possible cuts.
  • Captain Marvel: 13 Major Questions After The New Trailer

    Captain Marvel: 13 Major Questions After The New Trailer

    There's also a flashback that shows how Carol Danvers became Captain Marvel . Earlier this year we also found out that both Cobie Smulders and Samuel L.

    Bigg Boss 12 Day 79: BB School Bus Challenge Causes Chaos

    However, tomorrow seems to be fun as the housemates will be divided into two teams headed by Sreesanth and Romil Chaudhury. Somi tells him that she has a problem not because everyone is playing a game but because her trust has been betrayed.
    Premiere for 'Surviving R. Kelly' Film Evacuated Over Gun Threat

    Premiere for 'Surviving R. Kelly' Film Evacuated Over Gun Threat

    Kelly is a six-part series that Lifetime describes as an investigation into the controversial 51-year-old Chicago R&B singer. Lifetime said in a statement that it had chose to evacuate the event after "several anonymous threats" were called in.

Comments

Latest news

This country to have free public transport for all
The transport policy was formulated in response to the traffic congestion being experienced in landlocked Luxembourg. The new government also plans to introduce two new public holidays.

Samsung to unveil the Galaxy A8s on December 10
It will be powered by a Snapdragon 710 SoC along with up to 6GB of RAM and 128GB of internal storage (expandable up to 512GB). "The upcoming Galaxy A8s would be the first smartphone to feature a hole-punch display for the front camera ".

Booker leaves game vs. Lakers with hamstring injury
Kuzma has often been noted for his scoring prowess, but has faced scrutiny over the defensive side of his game. He has averaged 24.5 points and seven assists in 18 appearances in 2018-19.

A Bethesda web glitch revealed everyone’s support tickets, including personal info
Earlier today, gamers began reporting that they had been mistakenly given access to part of the Fallout 76 Support website. They would also be dispatching them free of charge to the unhappy customers.

Ubisoft teases post-apocalyptic Far Cry project
According to the teaser, the new Far Cry title will be available on PS4, Xbox One , and PC, but there's no release date just yet. The game appears to be a direct continuation of Far Cry 5 , following the destruction of life on Earth at the end of the game.

Corbyn praises 'brave' MP for revealing his HIV diagnosis
According to her, 70 million people had been infected of HIV, and 35 million have died of the infection since discovery in 1983. He told the Press Association that there were "low level elements of stigma [surrounding HIV] in every day life".

Azhar Ali shines in last Test against New Zealand
The Black Caps don't have to look far for good omens as they fight for victory in the third and deciding test against Pakistan . New Zealand couldn't get the breakthrough even after bowling 10 overs with the second new ball before lunch.

Istanbul prosecutor seeks arrest of Saudi officials over Khashoggi killing
He said finding a compromise will be hard because some lawmakers don't want to tie Yemen to the Khashoggi killing. Graham asserts pretty blatantly that Trump himself is tied up in the killing to some extent.

Yemen rebels head to Sweden for key peace talks
The UN has been trying to revive talks between the government led by President Abdrabbuh Mansour and the Iranian-backed Houthis who control much of the north.

Kate Middleton Wears Princess Diana’s Tiara Yet Again in Stunning Reception Look
Kate teamed the tiara with another tribute to Diana - her Collingwood diamond and pearl drop earrings. Markle looked every bit of a duchess in her navy mini dress, white coat and beret.

France and Germany aim to keep digital tax alive with new proposal
They'll say it's not enough and I can understand them", France's finance minister Bruno Le Maire said. But this is opposed to an initial plan to set a levy on all digital revenues of large multinationals.

Harris Reportedly Making Decision On 2020 Run Over Holiday Season
Cory Booker of New Jersey, Bernie Sanders of Vermont and Elizabeth Warren of MA . During the Obama era, she was popularly called as the "female Obama".

Jokic, Nuggets edge Raptors to end Toronto’s eight-game win streak
Toronto's awful three-point shooting continued in the second - Miles connected on the only one of 10 that fell for the Raptors. Clawing their way back from a 12-point deficit, a fadeaway shot by Leonard tied the game with 7.1 seconds on the clock.

IPL 2019: Over 1000 Cricketers Register For the Mega Auctions
Franchises have been given time till 5:00 PM IST on December 10 to send in their shortlist of players. USA, Hong Kong and Ireland have one player each in the initial list.

Sandra Oh and Andy Samberg to co-host 2019 Golden Globes
The Golden Globes had aired without a host for decades until NBC in 2010 tapped Ricky Gervais for the job. Samberg hosted the Emmy Awards in 2015, but it will be Oh's first time hosting a major awards show.

Other news