Long COVID brain fog linked to a change in brain cell receptors
Long COVID brain fog linked to higher AMPA receptors on PET scans; new study points to a biological marker and possible AMPAR-targeted treatments.
Study
Spinal cord ejaculation study reshapes sex research
A 2025 mouse study found that spinal cord neurons help shape sexual arousal, pacing, and ejaculation. It does not show that the spinal cord replaces the brain or that the same mechanism is proven in humans.
Vision gains in early dry AMD stem cell transplant trial
An open-label phase 1/2a report in Cell Stem Cell covers the first six participants in the lowest-dose arm of a donor-derived RPE stem cell trial for geographic atrophy. Chart scores in the poorest-vision group rose on average at a 12-month visit, and the better-vision group showed a modest average gain at six months, but the cohort is too small and too early to treat as proof of efficacy or as standard care.
The main options to straighten teeth: clear aligners like Invisalign vs braces and more
Straighter teeth are easier to clean, which helps prevent tooth decay and gum disease. A balanced bite spreads chewing forces more evenly, reducing tooth wear and jaw strain. Many people also feel more confident after treatment. In children and teens,…
TePe interdental brushes help many people clean between teeth better than floss
Interdental brushes are very small brushes that clean the spaces between teeth. These spaces often hold sticky plaque, which can lead to gum disease if not removed. Gum disease starts when biofilm builds up along the gum line and between…
End tuft toothbrush for teeth cleaning, helps remove dental plaque at the gum line and around braces
An end tuft toothbrush, also called a single tuft toothbrush, is a very small brush made for tooth brushing in hard to reach parts of the mouth. It targets dental plaque on the gum line, behind the last molars, around…
videoHow to Brush Your Teeth – Modified Bass Technique
The modified bass technique aims to clean where plaque hides most, right along the gumline, while protecting the gums. Plaque is the sticky film of bacteria on teeth. The gumline is the edge of the gum around each tooth. The…
Artificial sweeteners may speed cognitive decline
A large observational study linked higher intake of several artificial sweeteners to faster cognitive decline over about eight years, but it did not prove causation.
People do not die of old age: aging weakens the body and disease causes death
A common phrase says someone “died of old age.” Medicine says otherwise. Doctors do not certify “old age” as a cause of death, they identify the disease or injury that ended life, often after a gradual loss of resilience that…