Penn State engineers built a graphene-based breath sensor that detects acetone, offering quick, low-cost diabetes and prediabetes diagnosis.
Category: biotech/medical – Page 5
Ozempic teeth: Dentists warn of new GLP-1 side effect
Dentists warn they’re seeing cases of something nicknamed “Ozempic teeth.” Medications like Ozempic and Wegovy can lead to dry mouth because the active ingredient, semaglutide, affects the salivary glands, explains Adam Taylor, an anatomy professor at Lancaster University, in an article for The Conversation. The medications can also cause people to drink less water because they feel less thirsty.
Those factors combined increase the risk of cavities and gum disease, explained Dr. Rajpal Anjali, a cosmetic dentist at Beverly Hills Dental Arts.
To make things worse, some people also experience side effects like acid reflux and vomiting, further harming their tooth enamel.
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Tiny protein dismantles the toxic clumps behind Alzheimer’s
St. Jude Children’s Research Hospital. (2025, August 23). Tiny protein dismantles the toxic clumps behind Alzheimer’s. ScienceDaily. Retrieved August 23, 2025 from www.sciencedaily.com/releases/2025/08/250822073817.htm.
St. Jude Children’s Research Hospital. “Tiny protein dismantles the toxic clumps behind Alzheimer’s.” ScienceDaily. www.sciencedaily.com/releases/2025/08/250822073817.htm (accessed August 23, 2025).
Under or over? Automated technique can visualize and measure DNA tangles
At school, it’s often presented as a tidy double helix but scientists are revealing the varied and intricate shapes of DNA molecules.
DNA is a molecule found in just about every living cell. Because the molecule is long, it ends up twisting on itself and getting tangled. Enzymes in the body try to regulate this process but when that fails, normal activity in the cell can be disrupted, which triggers ill health and could be a factor in diseases such as cancer and neurodegeneration.
To find cures for major illnesses, scientists need to understand the complex shape of DNA tangles. Existing lab techniques enable them to plot the shape and structure of DNA tangles, but it is laborious and time-consuming.
400 Years After Their Discovery, Red Blood Cells Continue To Astonish Scientists
Penn researchers have revealed that red blood cells, not just platelets, play an active role in clot contraction. For years, scientists believed that red blood cells simply tagged along during clot formation without doing much. A new study from the University of Pennsylvania now shows they play an
In our lab we developed a novel nano-thermometer based on a superconducting quantum interference device (tSOT: SQUID on Tip thermometer) with a diameter of less than 50 nanometres that resides at the apex of a sharp pipette
This tool provides scanning cryogenic thermal sensing that is 4 orders of magnitude more sensitive than previous devices allowing the detection of a sub 1 μK temperature difference. Furthermore, it is non-contact and non-invasive and allows thermal imaging of very low intensity, nanoscale energy dissipation down to the fundamental Landauer limit of 40 femtowatts for continuous readout of a single qubit at one gigahertz at 4.2 kelvin.