Spermidine is a substance originally found in semen seen to support longevity. Spermidine is a polyamine, a type of organic compound with many touted health benefits. While it holds many potential benefits, its most recent claim to fame is its researched role as a longevity ingredient in healthy aging. Spermidine was originally discovered in semen in 1678 by a Dutch scientist named Anton Van Leeuwenhoek. It is produced in the body naturally, but our levels naturally decrease with age. Even though it was initially found in male semen, it is also found in tissues throughout the body of both men and women. It is also found in some plant-based foods that we eat, like cereal grains, some nuts, and some vegetables. Spermidine-rich foods are found in most plant-derived foods but are higher in a few specific foods: - Wheat germ - Cereals - Soybeans - Legumes - Mushrooms - Peas - Cauliflower - Broccoli - Green Beans - Spinach - Hazelnuts - Pistachios