Cardiology

Lead, mercury exposure raises cholesterol levels

Higher levels of lead and other heavy metals detected in the blood was associated with increased levels of lower density lipoprotein (LDL—bad cholesterol) and total cholesterol, according to preliminary research to be presented ...

Health

Deaths due to tainted herbal medicine under-recorded

A University of Adelaide forensic pathologist is warning that potentially harmful substances found in herbal medicines may be playing a bigger role in deaths of 'health tourists' than previously thought.

Cancer

A study links soil metals with cancer mortality

Spanish epidemiologists and geologists have found associations between esophageal cancer and soils where lead is abundant. Lung cancer has been associated with high copper content in soil; brain tumors are linked with areas ...

Autism spectrum disorders

FDA warns against bogus autism 'cures'

(HealthDay)—Don't fall for products claiming to cure autism, the U.S. Food and Drug Administration warns.

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Heavy metal (chemistry)

A heavy metal is a member of an ill-defined subset of elements that exhibit metallic properties, which would mainly include the transition metals, some metalloids, lanthanides, and actinides. Many different definitions have been proposed—some based on density, some on atomic number or atomic weight, and some on chemical properties or toxicity. The term heavy metal has been called "meaningless and misleading" in an IUPAC technical report due to the contradictory definitions and its lack of a "coherent scientific basis". There is an alternative term toxic metal, for which no consensus of exact definition exists either. As discussed below, depending on context, heavy metal can include elements lighter than carbon and can exclude some of the heaviest metals. Heavy metals occur naturally in the ecosystem with large variations in concentration. Nowadays anthropogenic sources of heavy metals, i.e. pollution, have been introduced to the ecosystem. Waste derived fuels are especially prone to contain heavy metals so they should be a central concern in a consideration of their use.

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