Newly published research in JAMA presents an alternative: a nasal swab test that researchers say accurately diagnoses a child’s asthma subtype. Researchers used the new tests in three studies of ...

So what’s the best way to clean our ears? And is using a cotton swab (or Q-Tip, the name brand that has become synonymous with the soft, fuzzy little tool) really as problematic as we’ve been told?

How can DNA from a cheek swab determine if someone is closely related to you? When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. DNA tests can ...