A 36-person experiment found that 18 Hz infrasound raised salivary cortisol and negative mood appraisal even though participants did not detect the infrasound above chance (p = 0.241).1 The result is a controlled acute signal, not proof that every real-world low-frequency noise complaint is physiologically caused by infrasound. Research Highlights Cortisol rose with infrasound: Infrasound …
A 2026 randomized exploratory pilot found that a single 24-minute yoga session did not significantly lower salivary cortisol or salivary alpha-amylase compared with quiet sitting in 19 stressed adults.1 The acute yoga signal was physiological but not the simple stress-biomarker drop that wellness claims often imply. Research Highlights Biomarker claim failed: Yoga did not significantly …
A 2026 review of 52 studies found that chronic primary pain is linked to several physiological stress markers, especially cortisol, heart rate, heart-rate recovery, and mean arterial pressure. The pattern is real enough to study, but not clean enough to use as a simple biomarker panel for pain severity.1 Research Highlights 52 studies were reviewed: …
The widespread use of corticosteroids (CCSs) across the globe for treating inflammatory conditions has led to an increased incidence of corticosteroid-induced neuropsychiatric disorders (NPDs), raising significant public health concerns. These disorders range from depression and anxiety to severe cognitive changes, challenging the medical community to find effective treatments. The exploration of genetic and epigenetic factors …
Many people with social anxiety are thought to experience overstimulation. Although one could argue that feeling overstimulated is a result of anxiety, it also could be that the overstimulation is actually causing your anxiety. So which came first the overstimulation or the anxiety? In most cases, it will help to take an objective look at …
Overcoming adrenaline addiction can be among the most challenging psychological experiences a person has to deal with in their entire lifetime. When people initially feel the adrenaline enter their body, it feels highly uncomfortable. Most people panic when it floods their body and mind, which leads to further production of adrenaline (also known as “epinephrine”). …