Lavender oils found in soaps, shampoo and laundry detergent can cause abnormal breast development in boys and girls from the age of three, according to a new study.
Previous research has linked abnormal breast growth in young boys to these essential oils, but the latest study is the first to examine the link in girls.
He found that those with premature thelarche – when breasts develop prematurely in girls before the age of eight without any other sign of puberty – have seen their symptoms disappear after stopping lavender oil products.
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The essential oil of lavender, the most popular essential oil in men and women in the United States, is known for its soothing qualities.
The girls studied were exposed to the lavender fragrance, bath soap and sticks scented with the professor's lavender oil.
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1/50 August 17, 2019
Glew (center) and Monroe Adams (right) pose for a selfie with a member of the public outside of DragWorld London 2019, the largest drag convention in Europe, featuring drag stars from the United States and Canada. United Kingdom at a two-day event in Olympia, London.
Pennsylvania
2/50 August 16, 2019
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4/50 August 14, 2019
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AFP / Getty Images
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Pennsylvania
6/50 August 11, 2019
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Getty
7/50 August 10, 2019
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Reuters
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AFP / Getty
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18/50 July 30, 2019
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21/50 July 27, 2019
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22/50 July 26, 2019
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Action Images via Reuters
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24/50 July 24, 2019
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EPA
25/50 July 23, 2019
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Reuters
26/50 July 22, 2019
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27/50 July 21, 2019
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Reuters
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29/50 July 19, 2019
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30/50 July 18, 2019
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Getty
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48/50 June 29, 2019
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Katielee Arrowsmith / SWNS
50/50 June 27, 2019
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4/50 August 14, 2019
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6/50 August 11, 2019
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Getty
7/50 August 10, 2019
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Getty
8/50 August 9, 2019
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Pennsylvania
9/50 August 8, 2019
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Reuters
10/50 August 7, 2019
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Reuters
11/50 August 6, 2019
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AFP / Getty Images
12/50 August 5, 2019
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Getty
13/50 August 4, 2019
Franky Zapata rides on his jet flyboard before landing at St. Margaret's Bay, Dover, as he tries to cross the 35-kilometer (22-mile) channel crossing. ). The Frenchman reached his goal today, on his second attempt, after spending years developing the jet hoverboard.
AFP / Getty
14/50 August 3, 2019
A cricket fan carries a Donald Trump inflatable boat on the third day of the first cricket match with Ashes between England and Australia at Edgbaston in Birmingham.
AP
15/50 August 2, 2019
An RAF Chinook helicopter is flying in sandbags to help repair the Toddbrook Reservoir Dam, which has been damaged by heavy rains.
Pennsylvania
16/50 August 1, 2019
Stuart Broad celebrates after taking David Warner's wicket on the first day of the first Ashes test between England and Australia at Edgbaston. English fans celebrated the loss of the dismissals of David Warner and Cameron Bancroft by waving sandpaper after facing a ban on playing their part in the Sandpaper scandal last year. Australia was eliminated for 284 points after Steve Smith frustrated the hosts with a total of 144. He helped his team go from 122 to 8.
Getty
17/50 July 31, 2019
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Pennsylvania
18/50 July 30, 2019
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Pennsylvania
19/50 July 29, 2019
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Pennsylvania
20/50 July 28, 2019
Competitors at the World Endangered Nettle Consumer Championship at The Bottle Inn in Marshwood. Competitors are served with long stalks of nettles that rip them off and eat as many leaves as possible.
Getty
21/50 July 27, 2019
A woman in the character of The Muerte from The Book of Life, at the MCM Manchester Comic Con, which sees thousands of sci-fi fans, gamers, comic book collectors, moviegoers and hobbyists cartoons visit Manchester Central
Pennsylvania
22/50 July 26, 2019
The Englishman Jonny Bairstow seizes the dismissal of the Irishman William Porterfield during his test march at Lord & # 39; s. Ireland has tilted 38 times in its second run in just 15.4 assists – the second lowest total in the history of Test matches
Action Images via Reuters
23/50 July 25, 2019
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Pennsylvania
24/50 July 24, 2019
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EPA
25/50 July 23, 2019
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Reuters
26/50 July 22, 2019
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Getty
27/50 July 21, 2019
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Reuters
28/50 July 20, 2019
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Pennsylvania
29/50 July 19, 2019
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Pennsylvania
30/50 July 18, 2019
Artist Steve Messam poses next to his monumental landscape work "Hush," hanging in the Teesdale Barrens on July 18, 2019 in Barnard Castle, England. The outdoor installation is inspired by the geology, mining history and landscape of the area. The North Pennines AONB partnership commissioned the facility located above Bales Hush, a deep gauge in the ground created when miners rinsed the area with water to reveal the geological riches beneath. Hundreds of meters of recyclable yellow saffron fabric blow in the wind.
Getty
31/50 July 17, 2019
The staff at Buckingham Palace organizes the dining table, a copy of the dessert table of Queen Victoria's reign, as part of an exhibition at Buckingham Palace in London. The exhibition marks the 200th anniversary of the birth of Queen Victoria
AP
32/50 July 16, 2019
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Getty
33/50 July 15, 2019
Extinguishment Rebellion activists block roads near Tron Clock Tower in Glasgow
Getty
34/50 July 14, 2019
Serbia's Novak Djokovic wins the winner's trophy after defeating Switzerland's Roger Federer in the men's singles final on the thirteenth day of the 2019 Wimbledon championships at the All England Lawn Tennis Club
AFP / Getty
35/50 July 13, 2019
The referee counts Nathan Gorman under the eyes of Daniel Dubois during the fight for the British Heavyweight title between Daniel Dubois and Nathan Gorman at the O2 Arena in London.
Getty
36/50 July 12, 2019
The giant panda, Yang Guang, is exploring his new home at Edinburgh Zoo after his move last week
RZSS / PA
37/50 July 11, 2019
The English captain, Eoin Morgan, left, celebrates with teammate Joe Root after winning their Cricket World Cup semi-final match against Australia at Edgbaston in Birmingham. Host nation swept rivals 8 wickets with 107 balls remaining
AP
38/50 July 10, 2019
Andy Murray and Serena Williams discuss as they face Bruno Soares and Nicole Melichar in their third round match-up match at the Wimbledon Championships. The starry pair is released in three sets to the seeded
AFP / Getty
39/50 July 8, 2019
Cori "Coco", aged 15, is serving Romanian Simona Halep in a singles match on the seventh day of the Wimbledon Tennis Championships in London. The youngest woman to qualify for Wimbledon in the open ended defeated Venus Williams in her opening match and qualified for the second week. Halep ended the teenagers' dream race on day six of the tournament, 6-3, 6-3
AP
40/50 July 7, 2019
A competitor participates in the Red Bull Soapbox Race at Alexandra Park, London. The soapbox race is an international event in which amateur drivers race downhill on craft vehicles.
Pennsylvania
41/50 July 6, 2019
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AFP / Getty Images
42/50 July 5, 2019
Andy Murray Serena Williams, partner of five mixed doubles, at a training session on the fifth day of Wimbledon
Getty Images
43/50 July 4, 2019
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AFP / Getty
44/50 July 3, 2019
A gray seal named after Sir David Attenborough is being returned to nature after months of treatment at the RSPCA East Winch Wildlife Center in Norfolk after being discovered with a plastic disk embedded in the neck.
Pennsylvania
45/50 July 2, 2019
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Pennsylvania
46/50 July 1, 2019
People sleep at the end of the 2019 Glastonbury Festival
SWNS
47/50 June 30, 2019
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Getty
48/50 June 29, 2019
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Pennsylvania
49/50 June 28, 2019
A lion-tailed macaque stays cool in hot weather eating icy sweet treats with fruit at Camperdown Wildlife Center, Dundee
Katielee Arrowsmith / SWNS
50/50 June 27, 2019
A festivalboy dances with LED hoops on the second day of the Glastonbury 2019 festival
Pennsylvania
A boy with pubertal gynecomastia, abnormal breast growth in boys, has also been studied. He was exposed daily to a cologne containing lavender oil and noticed an increase in the chest to four years.
According to an American study, children noticed that their breast tissue became normal again after getting away from lavender-based products.
L’investigateur principal, Jeffrey Ramsey, chercheur à l’Institut national des sciences de la santé de l’environnement (NIEHS) du gouvernement américain, a déclaré: cesser de les utiliser sur les enfants. "
Jusqu'à présent, les recherches ont exclusivement porté sur la manière dont les huiles essentielles pourraient affecter la croissance du tissu mammaire chez les garçons en modifiant le niveau d'hormones.
A étude publiée dans Le journal de médecine de la Nouvelle-Angleterre En 2007, trois garçons pré-pubères en bonne santé avaient des seins plus gros après avoir utilisé des produits contenant de la lavande ou des huiles de théier. Les symptômes ont disparu quand ils ont cessé d'utiliser les produits.
Une équipe de recherche NIEHS, y compris M. Ramsey, a suggéré en 2018 que les huiles essentielles peuvent affecter les niveaux d'oestrogène et de testostérone dans le corps.
Outre des études de cas, les dernières recherches ont permis de vérifier si les composants de ces huiles essentielles pouvaient interférer avec les hormones.
Il a constaté que l'huile de lavande et l'huile de théier peuvent imiter l'œstrogène et bloquer la testostérone.
Selon l'étude, les huiles essentielles ont «une plus grande puissance en tant qu'anti-androgènes qu'en tant qu'œstrogènes», ce qui est «plus pertinent pour bloquer l'action naturelle chez les garçons que chez les filles, où les androgènes inhibent le développement du sein».
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Il est encore possible que les symptômes aient disparu naturellement et c’est un hasard si les enfants ont cessé d’utiliser ces huiles au même moment.
Les chercheurs ne recommandent pas «d'éviter ces produits», mais plutôt «devraient être pris en compte dans l'évaluation du développement prématuré du sein chez les filles et de la gynécomastie chez les garçons et les hommes adultes».
L’industrie des parfums et de l’aromathérapie a souligné la différence entre les huiles essentielles biologiques et non biologiques, critiquant les études antérieures sur l’utilisation d’huiles non biologiques susceptibles d’être contaminées.
L'étude a été publiée dans Le journal de l'endocrinologie clinique et du métabolisme.