Health & Medicine
- Health & Medicine
Honeybee CSI: Why dead bodies can’t be found
Virus could explain one symptom of colony collapse.
- Health & Medicine
Imagination Medicine
Brain imaging reveals the substance of placebos. Expectation alone triggers the same neural circuits and chemicals as real drugs.
- Health & Medicine
Men line up for circumcision in Africa
But demand for the operation, shown to guard against HIV and other infections, exceeds availability.
- Health & Medicine
Fine-scale structure of egg crucial for fertility
Scientists describe the shape of a protein required for conception. These new molecular details will lead to an improved understanding of how sperm and egg unite.
- Health & Medicine
Protein found to set the heart’s cadence
Researchers have discovered a molecular metronome that sets the rhythm of the heart and blood pressure.
- Chemistry
Nanosilver disinfects — but at what price?
Silver demonstrates some unusual immunological impacts at the nanoscale.
- Health & Medicine
Bone density may be determined in the gut
A surprising new connection between the gut and bones may lead to new forms of treatment for human bone diseases such as osteoporosis.
- Health & Medicine
Lifestyle may link depression and heart disease
The association between depression and heart problems could stem from a lack of physical activity and other lifestyle factors.
- Health & Medicine
Many drug trials never see publication
Results of most drug trials are unreported, inaccessible to clinicians and patients, a new study confirms.
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- Health & Medicine
Brain reorganizes to make room for math
New research suggests that, as children learn arithmetic, the brain reorganizes dramatically as it shifts from handling only estimates of quantities to attaching precise quantities to symbolic numerals.
- Health & Medicine
Treat HIV-positive babies from the start
Babies who are born infected with HIV from their mothers should be treated for the virus as soon as possible, even before symptoms begin, a study finds.
