Original sentence: A case study reported in The New England Journal of Medicine concluded that "repeated topical exposure to lavender and tea tree oils probably caused prepubertal gynecomastia" (abnormal breast development) in three young boys.All three cases involved the use of products containing lavender oil as an ingredient, with the addition of tea tree oil to the products in the case of one of the boys.In the same paper, results from cell culture assays indicated that both essential oils exhibit weak estrogenic properties in vitro (i.Other parties have cast doubt on the conclusions of the article and dismissed the study as having used "poor methodology".Researchers also noted that estrogenic activities have also been reported for some other commonly used essential oils as well as some foods such as almonds and peanuts, but cited no associated cases of prepubertal gynecomastia.The prepubertal gynecomastia reversed after discontinuing use of the products.in a test tube, an artificial environment outside the living human organism)
Edited sentence: A case study reported in The New England Journal of Medicine showed a possible association between repeated topical application of products containing lavender oil with prepubertal gynecomastia (abnormal breast development in young boys).All three cases included the use of lavender oil.In one of the three cases, a product was used that contained lavender oil as well as tea tree oil, and other ingredients.In the same paper, results from cell culture assays indicated that both essential oils exhibit weak estrogenic properties.Other articles have cast doubt as to the conclusions of the article and dismissed the study as having used "poor methodology".Researchers also noted that estrogenic activities have also been reported for many other commonly used essential oils as well as foods such as almonds and peanuts.The prepubertal gynecomastia reversed after discontinuing use of products containing lavender oil