Physical exercise mitigates risk of sleep disturbances due to cadmium exposure BMC_series sleep exercise physicalactivity cadmium exposure
By Susha Cheriyedath, M.Sc.Aug 8 2023Reviewed by Benedette Cuffari, M.Sc. In a recent study published in BMC Public Health, researchers examine the correlation between blood cadmium exposure and sleep disturbances, as well as the role of physical activity on mitigating these effects.
Previous studies have demonstrated that heavy metal toxicity contributes to the development of neurological diseases such as stroke, Alzheimer's disease, and sleep disturbances. The effect of toxic metals on brain and sleep health is a growing area of research due to the increased prevalence of poor sleep and sleep disturbances in modern society. In fact, about one-third of the United States population self-reports trouble in sleeping.
Whole blood samples were obtained from all study participants and analyzed for Cd, Pb, and Hg levels through inductively coupled plasma-mass spectrometry . The study participants also provided information on their demographics, socioeconomics, physiological, biochemical, and health concerns. The presence of sleep disturbances was also determined by self-reports and interview responses.
About 25% of the study cohort reported sleep disturbances. A positive correlation was observed between study participants with blood Cd levels exceeding 1.68 µg/L Cd and sleep disturbances, whereas no statistically significant relationship was observed between Pb or Hg blood levels and risk of sleep disturbances.
Additional demographic factors that increased the risk of sleep disturbances with notable blood Cd levels included those who were older than 60 years of age, body mass index values exceeding 30 kg/m2, smokers, education level below high school or above college, unmarried, worse family income, alcohol consumption, and a diagnosis of cardiovascular disease.
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