Researchers claim that parabens and other chemicals found in common cosmetics can negatively impact a woman’s hormone levels, increasing the risk of certain diseases.
In the course of their daily lives, people are exposed to many different chemicals that could adversely affect their hormones.
These hormonal changes have been linked to several adverse health effects such as breast cancer and cardiovascular disease.
Therefore, understanding the chemicals that influence hormone levels is important for public health, and in particular for women’s health, as their exposure to these chemicals is often higher due to their presence in drug products. beauty and personal care.
A new study published in Environment International by George Mason University assistant professor of global and community health, Dr Anna Pollack and colleagues, has discovered links between chemicals widely used in cosmetics and personal care products and changes in reproductive hormones.
A total of 509 urine samples were collected from 143 women aged 18-44, free of known chronic health conditions and birth control to measure environmental chemicals found in personal care products, such as parabens, which are antimicrobial preservatives, and benzophenones, which are ultraviolet filters.
âThis study is the first to examine mixtures of chemicals widely used in personal care products related to hormones in healthy women of childbearing age, using multiple measures of exposure throughout the menstrual cycle. , which has improved research based on one or two measurements of chemicals, âPollack noted.
Additionally, commonly used household cleaners could make children overweight by altering their gut microbiota, suggests a Canadian study published in CMAJ (Journal of the Canadian Medical Association).
The study analyzed the gut flora of 757 infants from the general population aged three to four months and weighing one to three years, examining exposure to disinfectants, detergents and environmentally friendly products used in the home.
Researchers across Canada examined data from the Canadian Longitudinal Developmental Infant Birth Cohort (CHILD) on microbes in the feces of infants.
They used growth charts from the World Health Organization (WHO) for body mass index (BMI) scores.
Associations with altered gut flora in babies aged three to four months were strongest for frequent use of household disinfectants such as multi-surface cleaners, which had lower levels of Haemophilus and Clostridium bacteria but higher levels of Lachnospiraceae.
The researchers also observed an increase in Lachnospiraceae bacteria with more frequent cleaning with disinfectants.
They did not find the same association with detergents or green cleaners.
Studies in piglets have revealed similar changes in the gut microbiome when exposed to aerosolized disinfectants.
âWe found that infants living in households where disinfectants were used at least once a week were twice as likely to have higher levels of gut microbes Lachnospiraceae by three or four months of age; when they were three years old, their body mass index was higher than that of children not exposed to heavy household use of disinfectants when they were infants, âsaid Anita Kozyrskyj, professor of pediatrics at the University of Alberta and principal investigator of the SyMBIOTA project, an investigation into how alteration of the infant’s gut microbiome affects health.
Babies living in households that used eco-friendly cleaners had a different microbiota and were less likely to be overweight as toddlers.
âThese infants growing up in households with heavy use of green cleaning products had much lower levels of enterobacteriaceae gut microbes.
However, we found no evidence that these changes in the gut microbiome resulted in a reduced risk of obesity, âshe said.
She suggests that using eco-friendly products may be linked to healthier lifestyles and eating habits for mothers, in turn contributing to healthier gut microbiomes and weight in their infants.
âAntibacterial cleaning products have the ability to alter the environmental microbiome and alter the risk of overweight in children,â the authors write.
“Our study provides new information regarding the impact of these products on the gut microbial composition of infants and the results of overweight in the same population.”