Articles on Heavy metals

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Studies have found small amounts of toxic heavy metals and other potentially harmful substances in some menstrual pads and tampons. zoranm/E+ via Getty Images

Menstrual pads and tampons can contain toxic substances – here’s what to know about this emerging health issue

Heavy metals, phthalates and other potentially harmful chemicals have been detected in a range of menstrual products – the latest category of concern in the personal care aisle.
It’s important to buy cinnamon from reputable dealers. Anjelika Gretskaia/Moment via Getty Images

Cinnamon, spice and ‘everything nice’ – why lead‑tainted cinnamon products have turned up on shelves, and what questions consumers should ask

Lead can end up in cinnamon in a number of ways, but how much it contributes to blood lead levels in consumers depends on the amount of lead, as well as the frequency and amount of spice consumption.
One symptom of arsenic poisoning is the growth of plaques on the skin called arsenical keratosis. Anita Ghosh/REACH via Flickr

Arsenic contamination of food and water is a global public health concern – researchers are studying how it causes cancer

Millions of people worldwide are exposed via soil and water to arsenic, whether naturally occurring or related to pollution. Chronic exposure is linked to the formation of cancer stem cells.
When two neutron stars merge and create a black hole, they produce a powerful blast of gamma rays. A. Simonnet (Sonoma State Univ.) and NASA’s Goddard Space Flight Center

Unusual, long‑lasting gamma‑ray burst challenges theories about these powerful cosmic explosions that make gold, uranium and other heavy metals

Gamma-ray bursts occur when a massive star explodes or when two neutron stars merge. A newly discovered burst has puzzled astronomers, as it lasted much longer than astronomers would have expected.
Wildfire smoke contains a mixture of toxic pollutants that can be harmful to both the lungs and the brain. Bloomberg Creative/ Bloomberg Creative Photos via Getty Images

Neurotoxins in the environment are damaging human brain health – and more frequent fires and floods may make the problem worse

Pollution from more frequent floods and wildfires – exacerbated by the warming climate – is threatening human health and poses particular risks to the brain.

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