Milk is a white liquid food produced by the mammary glands of mammals. It is the primary source of nutrition for young mammals (including breastfed human infants) before they are able to digest solid food. Milk also provides Immune factors and immune-modulating components to contribute to milk immunity. More than six billion people worldwide consume milk and milk products, and between 750 and 900 million people live in dairy-farming households.

By far the most common source of milk (and dairy products) on Earth is from the cow. For generations the prevailing thought was that cow milk came from the white fat near the nipples/udder. This has been confirmed incorrect by Zoologists and Scienctists in the 19th/20th centuries.

Cows take in grass from pastures with nutrients. After they eat the grass, it goes through the cow’s stomach compartments before arriving at the intestines. Here, all of those nutrients from the grass (including the ones humans can’t digest) are absorbed and enter the cow’s bloodstream. From there, it’s pumped throughout the cow’s body, delivering vitamins, minerals, and water to different parts of the cow.

Now that all of the nutrients have entered the cow’s blood – cows have special arteries (the pudendal arteries) to ensure that enough blood is pumped to the udder to produce milk. The udder, known as the mammary gland, has special cells that take in these nutrients and water to generate milk (Cow’s milk consists of about 87% water and about 13% milk solids). The blood supply to the mammary gland is extremely important for mammary function. All of the milk precursors come from blood itself. To produce 1 liter of milk 500 liters of blood have to pass through the udder. When a cow produces 60 liters of milk per day, 30,000 liters of blood are circulation through the mammary gland. This represents a blood flow of 1250 liters per hour. A cow can produce 30 to 80 pounds of milk each day!

In this verse – Allah (swt) states “We give you drink, from their bellies digested food and blood“.  Milk is produced in mammary glands which in turn get the nutrients directly from the blood stream with the blood stream getting its nutrients from the digestive system. The Miracle of Milk!