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Epigenetics linked to the maximum life spans of mammals — including usSome chemical tags on DNA, called epigenetic factors, that are present at a young age can affect the maximum life spans of mammal species.
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What causes the placebo effect?Experts look to psychology and physiology to understand why people sometimes feel better after receiving a sham treatment.
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When did humans start getting the common cold?Prehistoric cold viruses are hard to find in the historical record, but scientists have unearthed some evidence in ancient human teeth.
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Chemicals that make babies smell sweet and teens smell 'goat-like' revealedAroma researchers worked out which chemicals in body odor differ between infants and teens who have hit puberty.
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What causes tinnitus, and can it be treated?That ringing that only you can hear can become really bothersome if it persists. Here's what triggers tinnitus, plus how you can manage the condition.
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Gut bacteria linked to colorectal cancer in young peopleCertain gut bacteria reside in colorectal tumors, but the species differ depending on a patient's age, offering hope that our gut tenants could serve as early warning signs of cancer in young people.
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How do fevers kill germs?You may have heard that fevers help fight infections. But how, exactly, do they do it?
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How does Tylenol work?Exactly how Tylenol — also called acetaminophen or paracetamol — relieves pain continues to evade scientists, but it's clear the drug interacts with one key set of enzymes.
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Can rats 'imagine'? Rodents show signs of imagination while playing VR gamesRats immersed in a VR world played games that could be won only by using imaginative route planning, scientists report.
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Could bacteria-killing viruses ever prevent sexually transmitted infections?The CDC will soon recommend that some people take a "morning-after" antibiotic to lower their risk of STIs. But someday, it's possible that bacteria-killing viruses could do this without driving antibiotic resistance.
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Can sugar cause acne?Because multiple factors can provoke acne, it's difficult to tease apart sugar's role.
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Why do we have earwax?When it's not causing problems, earwax is good for your health and should be left alone.
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Why is it harder for some people to build muscle than others?How do muscle cells grow after a workout? And how do your genetics affect your experience as a gymgoer?
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Scientists stumble upon a new part of a cell in one of the most studied animals on EarthScientists found a previously unrecognized organelle in fruit flies, a thoroughly studied organism.
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'Mind-control' parasite Toxoplasma hides from the immune system with 2 key genesA single-cell parasite relies on two genes that boost each other's activity to switch into "defense mode" when attacked by the immune system.
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CRISPR-edited fat shrank tumors in mice. Someday, it could work in people, scientists say.Genetically modified fat can be transplanted into mice to shrink mouse and transplanted human tumors, but this novel cancer therapy still needs to be tested in human trials.
