Wheat germ contains approximately 900–1,000 nmol spermidine per gram of dry weight — translating to approximately 80–100 mg per 100g of wheat germ, or about 2 mg per 2-tablespoon serving. This concentration is sufficient to provide meaningful dietary spermidine contributions within a normal serving size, unlike most other spermidine food sources.

Is raw wheat germ better than wheat germ oil for spermidine?

Raw wheat germ (the solid, flaky form) provides the highest spermidine per gram. Wheat germ oil is primarily valued for its vitamin E content; most spermidine is in the solid germ, not the oil fraction.

How do I know if my wheat germ is fresh?

Fresh wheat germ has a pleasant nutty smell. Rancid wheat germ smells musty or paint-like due to oxidized fats. Freshness matters both for spermidine content and for avoiding oxidized lipid consumption.