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Unlike traditional dairy milk, cockroach milk is not collected from mammary glands. Instead, it comes from protein crystals produced inside a specific cockroach species known as Diploptera punctata, often called the Pacific beetle cockroach. This insect is unusual because it gives birth to live young rather than laying eggs.
Scientists discovered that the developing offspring of this cockroach feed on a nutrient-rich liquid secreted by the mother. Inside the young insects, this liquid forms protein crystals that serve as a concentrated source of nutrition. Researchers analyzing these crystals found them to contain a balanced combination of proteins, fats, and carbohydrates.
According to scientists involved in the research, these protein crystals may provide all the essential amino acids needed by the body. Because of this, some experts have described the substance as a potentially complete food source.
Why Are Researchers Interested?
One reason cockroach milk has attracted scientific attention is its nutrient density. Studies suggest that the protein crystals may contain significantly more energy than an equivalent amount of cow's milk. This has led researchers to investigate whether the substance could someday be used as a nutritional supplement or ingredient in specialized foods.