Health Concerns

Health concerns

Health Concerns — Evidence-Based Research

Prevention and management guides for major health conditions, paired with honest supplement evidence for each one. We organize research around what you are actually trying to understand — and separate what the studies support from what only marketing claims.

By condition

Explore by health concern

Fourteen core areas, each with a dedicated category page bringing together prevention guides, management strategies, and the supplement evidence that applies.

How each condition is covered

Two article types per condition

For every condition we publish two complementary articles, so you get both the full picture and a fast, honest answer on supplements.

1
Full prevention & management guide
The complete picture for a condition — risk factors, prevention strategies, day-to-day management, and the lifestyle and clinical evidence that underpins each recommendation.
  • What raises and lowers risk
  • Prevention and management strategies
  • Evidence graded from Strong to Insufficient
2
Supplements that work vs. no evidence
A focused verdict on the supplements marketed for the condition — which ones have real supporting evidence, and which are sold on claims the studies don't back up.
  • Supplements with genuine supporting evidence
  • Popular options with little or no evidence
  • Interaction and safety flags called out
Our methodology

Every guide is built from primary sources — peer-reviewed trials, systematic reviews, and regulator guidance — and graded on the strength and independence of that evidence. We trace study funding and conflicts of interest rather than relying on self-disclosures, and we keep prevention advice separate from supplement claims so the two are never conflated.

Read how we research and grade evidence · See our full source list

Guides are revised as new high-quality research is published.

Cancer
Risk reduction, lifestyle evidence, and supplement claims examined against the trial data.
Heart & Cardiovascular
Cholesterol, lipids, omega-3 and CoQ10 — what protects the heart and what doesn't.
Diabetes & Blood Sugar
Insulin sensitivity, glucose control, and the metabolic-health evidence base.
Asthma & Respiratory
Triggers, management, and the supplement claims tested against respiratory outcomes.
Eczema & Skin
Barrier care, flare management, and which nutrients the evidence actually supports.
Blood Pressure
Minerals, vascular function, and lifestyle levers for hypertension.
Gut & Digestion
Microbiome, bloating, regularity, and absorption — grounded in the research.
Sleep
Falling asleep, staying asleep, and circadian rhythm — behavior first, supplements second.
Stress, Anxiety & Depression
Adaptogens, amino acids, and mood support — and the evidence behind each.
Fat Loss & Metabolism
What actually moves the needle for weight and metabolic health (and what doesn't).
Energy & Focus
Fatigue, cognition, and mitochondrial support — evidence vs hype.
Muscle Building
Protein, creatine, and hypertrophy — the strength and performance evidence.
Neurology & Brain Health
Narcolepsy, cognition, neurodegenerative risk — the neurological evidence.
Autoimmune & Inflammatory
Rheumatoid arthritis and immune-mediated inflammation evidence.