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Heart

All articles tagged with #heart

Wildfire Smoke May Heighten Heart Risks, AHA Provides Safety Tips
health1 month ago

Wildfire Smoke May Heighten Heart Risks, AHA Provides Safety Tips

The American Heart Association warns that wildfire smoke drifting from Canadian fires can raise the risk of heart problems, including heart attacks and cardiac arrests, and has been linked to more ER visits—especially for older adults and lower‑income communities. It recommends staying indoors with sealed windows and air filters, avoiding exertion, staying hydrated, and seeking shelter if the home lacks air conditioning. Be alert for heart attack or stroke signs (chest pain, upper‑body discomfort, shortness of breath, cold sweat, nausea, dizziness) and call 911 immediately; knowing CPR can significantly improve survival in cardiac arrest.

via ClickOnDetroit | WDIV Local 4|
#cardiovascular-health#emergency-care#health
Orbit’s Gravity-Free Body Reshapes Itself: Heart Rounds, Spine Stretches, Astronauts Gain Height
science2 months ago

Orbit’s Gravity-Free Body Reshapes Itself: Heart Rounds, Spine Stretches, Astronauts Gain Height

In microgravity, the human body changes shape: the heart becomes slightly more spherical (about 9.4% in a 2014 study of 12 astronauts) due to reduced gravitational load, while the spine lengthens as discs rehydrate, adding a few centimeters of height during long orbital stays. Both effects are temporary and reverse after returning to Earth, illustrating how much our form is defined by gravity. These changes raise considerations for long-duration missions (e.g., Mars), where deconditioning could affect performance on arrival and landing, though astronauts counteract with daily exercise. The heart change is a sign of cardiac deconditioning rather than permanent growth and is based on limited, preliminary data.

via Space Daily|
#astronauts#heart#microgravity
Workout Rewires the Heart’s Nerve Wiring Unevenly
science3 months ago

Workout Rewires the Heart’s Nerve Wiring Unevenly

Regular aerobic exercise reshapes the autonomic nerves that regulate the heart, producing asymmetric remodeling in the stellate ganglia of rats—more right-side neurons, larger left-side neurons, and an overall shrinkage in nerve volume—hinting at side-specific implications for treating heart rhythm disorders and chest pain; human relevance requires further study.

via SciTechDaily|
#asymmetry#autonomic-nervous-system#exercise
Human Hearts Show Regrowth After Heart Attacks, Study Finds
health3 months ago

Human Hearts Show Regrowth After Heart Attacks, Study Finds

New human data confirm that heart muscle cells can regrow after a heart attack, challenging the long-held belief that damage is permanent. By analyzing living heart tissue from bypass patients, researchers observed increased cardiomyocyte mitosis in the damaged regions, suggesting a regenerative process alongside scarring. While not yet reversing heart failure, these findings pave the way for therapies that boost the heart’s natural cell production to repair damage and potentially reduce reliance on transplantation.

via SciTechDaily|
#cardiomyocytes#health#heart
Beating Heart May Halt Cancer Growth, Spurring Mechanical Therapy
health3 months ago

Beating Heart May Halt Cancer Growth, Spurring Mechanical Therapy

A new study shows the mechanical force of heartbeats slows cancer growth by altering tumor cell gene activity. In mice and lab tissue, beating hearts reduced cancer proliferation and epigenetic markers linked to growth, with Nesprin-2 identified as a key sensor of heartbeat-induced forces. This points to potential mechanical therapies (like bands applying heartbeat-like force) or drugs that mimic the effect, though safety and timing must be established before human use.

via Live Science|
#cancer#epigenetics#health
Heartbeats may keep heart cancers rare, study suggests
science4 months ago

Heartbeats may keep heart cancers rare, study suggests

New research suggests the heart’s rhythmic beating creates mechanical strain that suppresses cancer growth in heart tissue. In mouse experiments, non‑beating transplanted hearts rapidly developed cancer, while beating native hearts largely resisted it and restricted cancer to the outer layers; engineered heart tissue that beat only when stimulated with calcium showed a similar pattern. This mechanical effect could help explain why heart tumors are extraordinarily rare in mammals.

via Nature|
#beating#biomechanics#cancer
Leonardo’s Heart Sketch Unlocks New Insights Into Heart Disease Risk
science4 months ago

Leonardo’s Heart Sketch Unlocks New Insights Into Heart Disease Risk

Scientists have linked the heart’s inner trabeculae, sketched by Leonardo da Vinci, to adult heart function and cardiovascular disease risk. Using fractal analysis, MRI data, and UK Biobank data from nearly 18,100 participants, researchers showed trabeculae shape affects cardiac performance and identified 16 genetic loci related to their development, suggesting embryonic origins influence disease risk and could inform clinical understanding.

via Indian Defence Review|
#cardiovascular-disease#fractal-analysis#genetics
Bike ride reveals a 50-year heart secret and a new mission
health4 months ago

Bike ride reveals a 50-year heart secret and a new mission

Diana Warren, 55, from Essex, collapsed during a leisurely bike ride and was found to have an atrial septal defect—a hole in her heart—that had gone undiagnosed for over five decades. After unsuccessful keyhole attempts, she underwent open-heart surgery in April 2024 with a pacemaker. Now recovered, she plans to cycle 54 miles from London to Brighton to raise funds for the British Heart Foundation.

via The Independent|
#brighton#british-heart-foundation#essex
Fractal Clues Unravel Heart’s Hidden Network
science4 months ago

Fractal Clues Unravel Heart’s Hidden Network

Researchers used fractal theory, MRI imaging, and genetics on 18,096 UK Biobank participants to show that the heart’s trabeculae—the snowflake-like muscular network—help determine cardiac performance and disease risk, a finding that builds on Leonardo da Vinci’s centuries-old observations and marks a first step toward a deeper understanding of how trabeculae form and function.

via Yahoo|
#fractal-analysis#genetics#heart
music1 year ago

NJ Man Arrested for Stealing Instruments from Rock Band Heart in Atlantic City

A man from New Jersey was arrested for stealing irreplaceable instruments from the band Heart, including a custom purple Telecaster and a vintage mandolin, which are highly valued by the band members. The theft occurred at the Hard Rock Casino & Hotel, and authorities are urging the return of the instruments, emphasizing their sentimental and artistic importance. The band continues their tour despite the incident.

via Rolling Stone|
#atlantic-city#burglary#heart
Daily Wine: Effects on Your Body
health1 year ago

Daily Wine: Effects on Your Body

Drinking a glass of red wine nightly may offer health benefits like improved heart health and reduced inflammation due to its antioxidants, such as resveratrol. However, these benefits are not sufficient to outweigh the risks associated with alcohol consumption, including disrupted sleep, medication interactions, increased cancer risk, and potential for alcohol dependence. While moderate wine consumption can be part of a healthy lifestyle, similar benefits can be obtained from antioxidant-rich foods without the associated risks of alcohol.

via EatingWell|
#antioxidants#health#heart