Huperzine A: mechanism, studies, doses and precautions
Extracted from a Chinese plant, huperzine A inhibits the enzyme breaking down acetylcholine. Actual trial findings, studied doses and precautions.
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From ingredients to everyday habits: guidance for exploring longevity with curiosity, precision and perspective.
Potassium: what it does, where to find it and when to be cautious
Potassium participates in nerve impulses, muscle contraction and blood pressure. Requirements, best sources, trial findings and why supplements require caution.
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Vitamin B6: 5 things to know, from requirements to overdose risk
Essential to over a hundred reactions, vitamin B6 is easily found in food. Forms, requirements, recognised roles and why EFSA lowered its safety limit in 2023.
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Milk thistle: silymarin, the liver and what studies show
Traditionally associated with the liver, milk thistle has been tested in dozens of trials. Mixed results, poor absorption and good tolerance: what science can establish, and what...
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Choline: a little-known nutrient, its roles, requirements and sources
Still little-known, essential choline serves membranes, the liver and acetylcholine. Requirements, best sources, authorised claims, forms and evidence limitations.
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Taurine: roles, sources, energy drinks and safety
A sulphur-containing amino acid in meat and seafood, taurine is widely researched. Roles, sources, trial findings and what is known about safety.
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Melatonin and sleep: what studies say
The night-time hormone melatonin has two authorised claims, for sleep onset and jet lag, but its measured effect remains modest. Studies, ANSES advice and what works better...
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Passionflower: what are its benefits? Studies and precautions
Passiflora incarnata: what the European Medicines Agency recognises, what trials show about anxiety and sleep, and precautions to know (drowsiness, pregnancy, sedatives).
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Glutathione: roles, absorption and supplemental forms
A major antioxidant in our cells, glutathione is widely sold as a supplement. But does it cross the intestinal barrier? Trial findings, precursors, studied doses and limits...
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How to improve memory: what works according to studies
Sleep, self-tests, spaced revision and physical activity: what studies really show for improving memory, and nutrients' more modest role.
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Berberine: blood glucose, cholesterol, side effects and precautions
Mostly in diabetic patients, trials measured lower glucose and cholesterol with high-dose berberine. But it interacts with many treatments, and ANSES/EFSA remain cautious. The evidence reviewed.
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NAD+: definition, roles and age-related decline, what is really known
A coenzyme in all cells, NAD+ enables energy production and key enzymes. How it is made, why it declines with age and what human measurements actually show.
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