Luxembourg Launches LëtzHBM Study on Household Chemical Exposure

Published By DPRJ Universal | Published on Friday, 10 April 2026

Luxembourg's National Health Laboratory (LNS) launched the LëtzHBM project, a large-scale study investigating chemicals affecting households. Part of a European initiative, it aims to understand how everyday products impact human health and accumulate in the body. Researchers collect environmental and biological samples from homes, with 175 households participating so far. The study, ongoing until September, seeks more participants to establish national reference values and inform future public health directives regarding chemical exposure.

The National Health Laboratory (LNS) in Luxembourg has initiated a significant project, LëtzHBM, as part of a wider European effort to investigate the impact of chemicals on households and human health. Everyday products introduce numerous chemicals into the environment, yet their effects on health and potential accumulation in the body remain largely unknown. To address this, the LëtzHBM study collects various samples from children and adults directly in their homes.So far, 175 households have participated, motivated by a desire to understand personal chemical exposure, as highlighted by participant Sophie Wehenkel, who focused on her home's chemical environment, particularly furniture. Nurse Monica Azevedo Mesquita conducts home visits, collecting air, dust, and tap water samples. Participants are advised against vacuuming prior to these visits to ensure accurate environmental readings. Furthermore, biological samples including blood, urine, and hair are taken to ascertain if chemicals detected in the home are present in the body and to assess their adverse health effects.Led by epidemiologist Maria Torres Toda, the study aims to establish national reference values for various chemicals, providing robust data to inform future public health directives. The project is set to run for a year and a half, continuing until September. Researchers are actively seeking approximately 100 additional participants, specifically from the northern and eastern regions of the country, to ensure the study's findings are as representative and comprehensive as possible.