Supplement Science Blog | Everbright Labs

Spermidine research: Where it comes from and what studies show

Spermidine research: Where it comes from and what studies show

Your body’s spermidine supply doesn’t come from food alone: the body makes spermidine from putrescine, and gut bacteria can produce it too. Foods such as wheat germ, soya, aged cheese and mushrooms also provide it. Sperm…

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Spermidine in Foods and Supplements: Sources, Benefits, and Safety

Spermidine in Foods and Supplements: Sources, Benefits, and Safety

Spermidine is a naturally occurring polyamine found in food and produced by the body. Wheat germ is a particularly rich food source, containing 24 to 35 mg per 100 g, while soya beans contain 20.7 mg per 100 g. Understan…

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Wheat germ extract spermidine: sources, effects and safety

Wheat germ extract spermidine: sources, effects and safety

In preclinical research, spermidine supplementation extended lifespan by approximately 10% in mice; this is a finding in animals, not a human outcome. Spermidine is a naturally occurring polyamine, and wheat germ extract…

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Spermidine supplement clinical studies on safety and evidence

Spermidine supplement clinical studies on safety and evidence

The early clinical safety findings are reassuring, though limited in duration. In a placebo-controlled trial, 37 healthy men aged 50-70 received 40 mg/day of high-purity spermidine trihydrochloride for up to 28 days, wit…

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Spermidine and Ageing: Levels, Food Sources and Health Links

Spermidine and Ageing: Levels, Food Sources and Health Links

A molecule involved in cellular maintenance may offer useful clues about how we age. Spermidine is a naturally occurring polyamine that helps maintain healthy cells, and the connection between spermidine and healthy agei…

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The Science Behind Cellular Rejuvenation: How to Support Biological Ageing in 2026

The Science Behind Cellular Rejuvenation: How to Support Biological Ageing in 2026

What if the persistent brain fog and afternoon energy slumps you're experiencing aren't just inevitable signs of getting older, but specific biological hurdles that your cells can be trained to overcome? It's a common fr…

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How to Choose the Best NAD+ Supplement: A UK Buyer's Guide

How to Choose the Best NAD+ Supplement: A UK Buyer's Guide

A buyer's guide to the best NAD+ supplement in the UK, built around what the published research actually shows, not marketing claims

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What Is Spermidine? Autophagy, Longevity and Spermidine Supplements

What Is Spermidine? Autophagy, Longevity and Spermidine Supplements

Spermidine supplements are becoming one of the most talked-about tools in longevity research due to their ability to support autophagy; the body’s natural cellular recycling system. Autophagy helps remove damaged proteins and worn-out cellular components that accumulate as we age, allowing cells to function more efficiently. In this article, we explore how spermidine works, why autophagy is considered one of the most important longevity pathways in the body, and how a well-designed longevity supplement can support these critical cellular maintenance processes

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