Explainers
Plain-language deep dives for public audiences
Vegan, Gluten-Free, Cruelty-Free: What a Manufacturer’s Declaration Is Worth
A badge on the box, a signed declaration, and an audited third-party certification are three very different things. Here is…
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Can laughter improve health? Researchers launch study to find out
A new research initiative called the Laughter Lab is systematically investigating whether laughter can improve health and wellbeing. The study…
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Vitamin D dose response is not linear: Why shelf-picked supplements may not work as expected
Vitamin D supplements do not work the same way for everyone. Research shows that doubling…
How a single stem cell in bone marrow generates your entire immune system
All blood and immune cells originate from a single pluripotent hematopoietic stem cell in bone…
How amino acids shape brain function: neurotransmitters, energy, and cognitive resilience
Amino acids are the precursors to neurotransmitters and metabolic substrates for brain energy. Tryptophan produces…
How Coffee and Tea Reduce Iron Absorption: A Mechanism Explained
Polyphenols in coffee and tea bind non-heme iron in the gut, reducing absorption by 50…
Why the ‘2pm coffee cutoff’ is a myth: genetics and lifestyle create a 15-fold range in caffeine metabolism
A new systematic review reveals that caffeine half-life varies 15- to 40-fold across healthy adults,…