Dexcom Inc. executives may have thought a $30 million beat of the consensus estimates for third quarter revenue and 20% growth year-over-year provided a treat to shareholders, but investors seemed to feel tricked instead. The continuous glucose monitoring powerhouse saw its share price drop a frightening 17% in the first two hours of trading on Oct. 31, and pushing it down by nearly one-third from its peak of $89.53 in late July. Investors appear to have been spooked by the company’s conservative guidance for 2026, following issues with its G7 sensor, which management said have been largely resolved.

UK researchers developing glucose-powered bioelectronics

Scientists in the U.K. are developing glucose-powered bioelectronics to advance the use and capabilities of implantable medical devices. A research team, led by the University of Bath, received £2.1 million (US$3.3 million) in funding from the government to develop miniature, lightweight and long-lasting glucose fuel cells (GFCs) to help address the invasiveness and limitations of current battery-powered implants.

Image anomalies found in 40% of brain hemorrhage animal studies

Two in five preclinical studies on subarachnoid hemorrhage (SAH) published in peer-reviewed scientific journals contain problematic images. A team of researchers from Radboud University Medical Center, who had previously identified several such cases, analyzed the literature in this field to assess the scope of the issue. They found that 40% of the studies included suspicious images. Some have been retracted, corrected, or are under investigation. Others remain published without any warning. The researchers note that unreliable data is not exclusive to this condition. In their systematic review published in PLOS Biology on Oct. 30, 2025, the authors examined 608 articles on SAH and flagged 243 as problematic due to concerns about image integrity and potential manipulation, representing 40% of all the papers analyzed.

Better DNA repair helps bowhead whales live longer, cancer free

Bowhead whales (Balaena mysticetus) live year-round in the icy or near-icy waters of the Arctic and sub-Arctic. Although they migrate with the seasonal cycles of ice formation and melting, they never reach the warmer waters visited by other large marine mammals. These whales can grow over 15 meters long, weigh up to 100 tons, and use their strong heads to break through ice up to one meter thick, like living icebreakers. Their adaptation to low temperatures may have also enabled them to live longer and avoid cancer, a disease closely linked to aging. A study on this cetacean highlights its remarkable DNA damage repair capacity and genomic stability as key factors behind this evolutionary success.

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Biostem Technologies, Brainomix, Edwards Lifesciences, Endoquest, Hoag, Intervene, Medirom Mother Labs Inc., Nvidia, Philips, Tosoh Bioscience