Article Learning & Concentration
Sustained Attention: What Research Says About Deep Work
The claim that focus has collapsed is more repeated than measured. Here is what research actually establishes about interruption, flow, and…
Guides & Articles (61 total)
Supporting guides and in-depth articles: side effects, comparisons, and how-to content that goes deeper than the main product reviews.
Article Men's Health & Prostate
Testosterone and Aging: What Declines, What Matters, and What Helps
Testosterone falls slowly with age, and the symptoms blamed on it are frequently caused by something else entirely. Here is what the…
Article Men's Health & Prostate
Enlarged Prostate (BPH): What It Is and What the Evidence Supports
An enlarged prostate is close to universal with age, and prostate size predicts symptoms poorly. Here is what BPH is, what it is not, and…
Article Teeth & Oral Health
Bleeding Gums: Why It Happens and What to Do About It
Bleeding when you brush is the most commonly ignored sign in oral health, and the most common response to it, brushing more gently, is…
Article Brain, Memory & Focus
The Gut-Brain Connection: What Is Established and What Is Not
The gut and brain communicate constantly, and that fact has been stretched to support claims the research does not carry. Here is where the…
Article Brain, Memory & Focus
Mental Fatigue: Why Thinking Is Tiring and What Helps Recovery
Mental fatigue is a distinct state from sleepiness, and one that a nap does not reliably fix. Here is what the research suggests is…
Article Brain, Memory & Focus
Cognitive Reserve: Why Some Brains Age Better Than Others
Autopsy studies found people with substantial Alzheimer's pathology who had shown no symptoms in life. The concept built to explain that…
Article Joints & Mobility
Diet and Joint Inflammation: What the Evidence Supports
Anti-inflammatory food lists are everywhere, and the research behind them is more limited than the lists suggest. Here is what the evidence…
Article Blood Sugar & Weight
Uric Acid and Weight: What the Evidence Actually Shows
Uric acid has become a popular explanation for stubborn weight, largely on the strength of an association whose direction is still debated…