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Marijuana is now legal in many places, but is it safe? Two new studies add to mounting evidence that people who use cannabis are more likely to suffer a heart attack than people who do not use the drug, even among younger and otherwise healthy adults.

A multicenter study led from Finland has shown that lymph node transfer is a viable treatment for the swelling in the affected limb, a condition known as lymphedema, after breast cancer surgery.

Researchers conducted an experiment in which test subjects felt like a rubber hand was part of their own body. As a result, their own hand became less sensitive to pain.

Small amounts of a common antibiotic and anti-inflammatory drug can curb symptoms where a misplaced immune reaction (e.g., autoimmunity) can cause permanent hair loss, a new study shows.