TAPP Science & Education Updates — Issue 363
Brains That Train, Genes That Surprise, and the Trouble with BMI
Coffee (and tea) linked to slower brain ageing in study of 130,000 people
A long-running analysis of two big cohorts found that moderate caffeine intake from coffee or (my favorite) tea tracked with slower cognitive decline and lower dementia risk. Decaf did not show the same pattern, which nudges the “maybe it’s caffeine” idea forward, even if this is still observational.
A&P teaching tip: Build a quick “mechanism map” activity. Have students connect caffeine’s known physiology—adenosine signaling, sleep, cerebral blood flow, stress hormones—to plausible cognition outcomes, and then label where evidence is strong vs. speculative.
Read more→AandP.info/c1r
February 13 is the deadline to submit your workshop or poster proposal for the 2026 HAPS Conference. I’m just saying…
Exercise rewires the brain — boosting the body’s endurance
In mice, repeated treadmill sessions strengthened synaptic wiring in a specific hypothalamic neuron population (SF1 neurons), and that rewiring was required for endurance gains over time. When researchers shut those neurons down after exercise, the training effect faded.
A&P teaching tip: When you teach training adaptations, don’t stop at muscle. Add a “brain-to-body” layer: neural circuits → autonomic output → metabolism → performance.
Read more→AandP.info/h3e
Passive exposure may speed learning
A mouse study suggests that pairing active training with low-effort passive exposure—hearing the cues outside of training—helps learners reach the same performance threshold with less work. It’s a reminder that the nervous system keeps learning even when we’re “not studying.”
A&P teaching tip: Design “background exposure” into your course. Short audio recaps, recurring concept phrases, and brief retrieval prompts can quietly reinforce the same pathways students struggle to build.
Read more→AandP.info/kjm
Teaching A&P Bit by Bit
This episode is basically passive exposure with a teaching badge on it—podcasting, tutor videos, and LMS-independent resources that let students keep hearing key ideas in small, repeatable doses. Steve Sullivan and Kevin also talk about building a teaching voice that students will actually listen to.
A&P teaching tip: Try a 2–3 minute “concept echo” audio after each major topic. Keep it focused on one physiological relationship—cause → effect → consequence—and ask one retrieval question at the end.
To listen to this episode, click on the play button above ⏵ (if present) or this link→ theAPprofessor.org/podcast-episode-156.html
Self-powered vibration sensor for wearable health care and voice detection
A new wearable capacitor-array sensor can pick up a wide range of body vibrations—from speech to lung sounds—without needing an external voltage. The design aims for stable on-skin performance and broad frequency sensitivity, which is exactly where many wearables struggle.
A&P teaching tip: Use this as a bridge between anatomy and instrumentation. Ask students: “What tissue motion is the sensor really detecting?” Then link it to airflow, pressure changes, and sound generation. Have students try to think of all the possible future uses of this tech in studying human function and in practical, day-to-day wellness.
Read more→AandP.info/8jb
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A “hidden” gut microbe group keeps showing up in healthy people
A large meta-analysis of global gut metagenomes points to an uncultured bacterial group that appears more abundant in health across multiple conditions, and aligns with lower dysbiosis. The big caution is causality—these microbes may be markers, helpers, or both.
A&P teaching tip: Turn this into a systems-thinking prompt: microbiome → metabolites → immune tone → barrier function → disease risk. Then make students identify the “unknown arrows.”
Read more→AandP.info/72p
Your BMI can’t tell you much about your health — here’s what can
This piece lays out why BMI misclassifies individuals and why measures tied to fat distribution do a better job predicting risk. Waist-to-hip, waist-to-height, and newer indices aim to capture what matters most physiologically: visceral fat and cardiometabolic strain.
A&P teaching tip: When covering homeostasis and disease risk, swap “weight” for “distribution + function.” Pair anthropometrics with basic physiology labs or case data—BP, lipids, A1c—so students see why one number is never the whole story.
Read more→AandP.info/45g
Teaching molecules to “think” may reshape how we define a mind
Researchers are using learning and “agency” ideas to interpret gene regulatory networks and other molecular systems that can adapt in ways that look a lot like memory and prediction. It’s provocative and risks overreach—but it’s also a powerful framing for emergence and control in biology.
A&P teaching tip: Use this to teach levels of organization without turning it into philosophy class. Ask: “What changes when regulation becomes coordinated?” Then tie it to feedback loops and emergent properties students already know.
Read more→AandP.info/9hv
Scientists discover first gene proven to directly cause mental illness
A University of Leipzig team reports that certain GRIN2A “null” variants are strongly linked to early-onset schizophrenia and other psychiatric disorders, sometimes presenting without the expected epilepsy or learning issues. The report also notes early treatment signals with L-serine in some patients, hinting at a precision-therapy angle.
A&P teaching tip: When teaching synapses and neurotransmission, GRIN2A is a concrete bridge from receptor physiology to behavior. Have students trace: NMDA receptor function → circuit stability → symptoms → why “one pathway” can have many phenotypes.
Read more→AandP.info/zcy