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Scientists have identified potentially cancer-causing chemicals hiding in many everyday foods, especially those exposed to high heat cooking methods like grilling, roasting, smoking, and frying. The compounds, known as PAHs, can form during cooking or enter foods through contamination, raising concerns about long-term health risks.

A new clinical trial suggests that eating beef every day may not be as risky for people with prediabetes as many assume. Researchers found that adults who ate 6–7 ounces of beef daily for a month showed no worsening in blood sugar control, insulin function, inflammation, or other key markers linked to type 2 diabetes when compared to people eating poultry instead.

Getting enough vitamin B12 to meet current health guidelines may not actually be enough to protect the aging brain. Researchers at UC San Francisco found that older adults with “normal” but lower levels of active B12 showed signs of slower thinking, delayed visual processing, and more damage to the brain’s white matter — the communication highways that help different brain regions work together.

A surprisingly simple walking tweak may offer new hope for millions living with knee osteoarthritis. In a year-long clinical trial, researchers found that slightly changing the angle of a person’s foot while walking reduced knee pain as effectively as common medications — and even slowed cartilage damage inside the joint.

Amyloid precursor protein (APP) gives rise to amyloid-β, a pathological factor in Alzheimer's disease. However, the physiological role of APP and its homolog amyloid precursor-like protein 2 (APLP2), which are also widely expressed outside the nervous system, is largely unknown. Here, we show that endothelial APP and APLP2 are required for postischemia angiogenesis after myocardial infarction (MI). We found that hypoxia induced the endothelial expression of α-secretases, resulting in...

The field of human adult neurogenesis has been controversial despite mounting evidence. The authors propose moving beyond debating the existence of adult neurogenesis and towards discovering strategies to harness endogenous stem cell potential for resilience against cognitive aging.

Aging is increasingly recognized as a dynamic and potentially modifiable biological process, yet translation of mechanistic discoveries into clinically validated interventions that extend human healthspan remains limited. Because dermatologists can directly observe, sample, and quantify age-related changes in vivo, the skin provides an accessible platform for gerotherapeutic evaluation. As the largest and most environmentally exposed organ, the skin integrates intrinsic hallmarks of aging,...

Workaholism, also referred to as problematic overworking, has received increasing attention due to its adverse consequences for individuals, families, and organizations. This perspective paper argues that workaholism represents a largely neglected risk factor for unhealthy aging, as sustained exposure to excessive and compulsive work might be associated with an increased risk of cardiometabolic conditions, including hypertension and cardiovascular disease. We further highlight that, despite the...

Accurate projections of temperate tree growing seasons under climate change require representing developmental constraints that determine tree resource allocation. A phenological 'switch point' after the summer solstice (21 June) has been proposed, with pre-solstice warming advancing autumn phenology and post-solstice warming delaying it. We propose that this switch is flexible and occurs at the compensatory point between early-season development and late-season temperature effects. We performed...

Older adults are highly vulnerable to infectious diseases, and vaccines are often less effective in this population because of diminished B and T cell memory responses driven by impaired autophagy, immunosenescence, and chronic low-grade inflammation. Spermidine has been shown to counteract immunosenescence and induce autophagy in preclinical models, and its levels decline with age in humans. We conducted a double-blind, randomised, placebo-controlled pilot study in 40 adults over 65 years of...

Aging significantly impairs vaccine efficacy in older adults, driven by immunosenescence, inflammaging, and disruptions in the gut microbiota-mTOR-immune axis. This review synthesizes current evidence on how aging alters vaccine-induced immune responses through the interplay of gut microbiota dysbiosis and dysregulated mTOR signaling. Age-related microbial diversity declines and reduced short-chain fatty acid (SCFA) production exacerbate inflammation, while heightened mTOR activity suppresses...

Researchers have discovered that the GLP-1 hormone targeted by drugs like Wegovy is present in very low amounts inside the joints of arthritis patients. That finding suggests high-dose GLP-1 medications could potentially reach the joints and influence inflammation directly, not just help through weight loss. Scientists say this could open the door to a completely new approach to arthritis treatment.

The $19 billion Future Circular Collider would build on results from CERN’s Large Hadron Collider, currently the world’s largest

Jasmine Clark led a March for Science in 2017. She just won a Georgia primary for a safe Democratic House seat