Oxidative Stress News and Research

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Oxidative Stress is a condition in which antioxidant levels are lower than normal. Antioxidant levels are usually measured in blood plasma.

Study links higher body fat to lower sperm counts despite normal BMI

Among 1,058 Danish men, higher body fat percentage was associated with lower total sperm count and altered reproductive hormone levels, but not testicular volume. Body fat percentage showed stronger links with several semen measures than BMI or waist-to-height ratio, with the sperm-count association strengthening among men with normal BMI.

2 Aug 2026

Review outlines effective approaches to reduce recurrent hepatic encephalopathy

Hepatic encephalopathy (HE) is a neurologic complication of advanced liver disease, causing impaired functioning, reduced quality of life (QOL), and increased hospitalisation and mortality.

31 Jul 2026

How intensive poultry farming accelerated the evolution of Campylobacter

Intensive poultry farming transforms Campylobacter jejuni ecology, enhancing host adaptability and raising concerns for foodborne illness transmission.

31 Jul 2026

Perilla oil improves blood flow and reduces inflammation in healthy smokers

Cardiovascular disease (CVD) is among the leading causes of death worldwide. In South Korea, it is the second leading cause of death, and its incidence has continued to rise in recent years.

30 Jul 2026

Cigarette smoke extract primes airway cells for greater nanoplastic damage

Researchers found that cigarette smoke extract weakened epithelial barriers and increased the proportion of human airway cells that were polystyrene nanoparticle-positive. Sequential treatment caused greater metabolic disruption and increased mucus-producing cells, suggesting heightened epithelial vulnerability, although the findings are limited to in vitro models.

30 Jul 2026

Tire microplastics could fuel antibiotic resistance in urban environments

Tiny particles released as vehicle tires wear down may do more than pollute urban air, water, and soil. A new perspective article suggests that tire microplastics could create environmental hotspots that help antibiotic resistance genes persist, move between bacteria, and spread through cities.

29 Jul 2026

Experimental therapy helps brain cells bypass genetic deletions

Scientists at the Fralin Biomedical Research Institute at VTC have discovered how an experimental therapy can help brain cells overcome the effects of a disease-causing genetic deletion.

28 Jul 2026

Lifestyle habits may explain difference in endometriosis symptoms

Investigating lifestyle factors, this study highlights their role in quality of life for women with endometriosis, advocating for personalized care strategies.

28 Jul 2026

Review finds blueberry and grape polyphenols may improve vascular health

A review of 37 publications found that grape- and blueberry-derived polyphenols were associated with modest improvements in cardiovascular risk markers, particularly endothelial function. However, most studies were small or short-term, frequently tested concentrated products, and measured biomarkers rather than cardiovascular events.

27 Jul 2026

Too little or too much iodine may push immunity off balance

This narrative review finds that adequate iodine supports thyroid hormone signaling, leukocyte metabolism, antioxidant defenses, and antimicrobial activity in humans and domesticated mammals. Both deficiency and sustained excess may impair immunity or promote thyroid inflammation, but precise immune-specific intake thresholds remain uncertain.

27 Jul 2026

Industrial chicken farming drives evolution of foodborne bacteria strains

A new study by the Ineos Oxford Institute for antimicrobial research, University of Oxford, reveals that industrial poultry farming has led to more than 100-fold increase in the movement of Campylobacter, allowing strains that once circulated in wild birds to mix extensively in commercial poultry populations.

27 Jul 2026

Review expands the role of selenium metabolism in ferroptosis

For decades, selenium has been recognized as an essential micronutrient, and glutathione peroxidase 4 (GPX4)-a selenium-containing enzyme-has been widely regarded as the central guardian against ferroptosis, an iron-dependent form of regulated cell death driven by lipid peroxidation.

23 Jul 2026

Red meat intake emerges as a potential pancreatic cancer risk factor

A systematic review and meta-analysis of 16 studies involving nearly 2 million participants found that higher red meat intake was associated with a modestly higher risk of pancreatic cancer. Processed meat intake showed no statistically significant association, although variation between studies means a small effect cannot be excluded.

22 Jul 2026

Bee venom boosts the effects of standard Parkinson's therapy

Parkinson's disease (PD) is a progressive neurodegenerative disorder caused by the loss of dopamine-producing neurons, leading to motor symptoms such as tremors, rigidity, slowed movement, and impaired balance, as well as cognitive decline.

22 Jul 2026

Peroxisome preservation extends lifespan and protects mitochondrial health in worms

A new research paper was published in Volume 18 of Aging on July 6, 2026, titled "Inhibition of peroxisomal protein PRX-11 promotes longevity in Caenorhabditis elegans via enhancements to mitochondria."

21 Jul 2026

Study tests chronotype’s liver link and finds no significant association

Researchers found no significant association between chronotype and FibroScan-derived liver fat or stiffness in 119 medication-naïve adults with overweight or obesity. The exploratory findings cannot exclude smaller effects, particularly for fibrosis, and require confirmation in larger longitudinal studies.

21 Jul 2026

NOX4 inhibition may protect hearts affected by Duchenne muscular dystrophy

Researchers at the University of South Florida USF Health Morsani College of Medicine have identified a potential pathway that could protect cardiac function in people with Duchenne muscular dystrophy, a progressive and fatal genetic disease that weakens the body's muscles.

17 Jul 2026