There are two causes for people being unable to digest cow's milk: lactose intolerance and milk allergy.
Up to 75% of people in the world can’t consume dairy, especially those with Mexican, African, Native American or Asian heritage: when they drink milk, they experience digestive problems or allergic reactions.
Lactose intolerance: Some people have a tough time digesting the milk sugar, called lactose, and so they get stomach pains or gas.
Milk allergy: Some people experience allergic responses to protein in the milk, which triggers an immune response in their bodies as if they were warding off invaders. Symptoms can include excess mucous in the throat, shortness of breath, nausea, headaches and even hives.
Lactose intolerance
The inability for the body to process dairy products is known as lactose intolerance. This condition occurs when the small intestine doesn't produce enough of the enzyme lactase, which is needed to digest lactose, the sugar found in milk and dairy products. Symptoms may include bloating, gas, diarrhea, and stomach cramps after consuming dairy.
Dairy Products (which are made from milk) contain calcium and nutrients that your body needs. So there for Dairy Products are a good source of calcium.
Milk and dairy products makes our teeth healthy and strong bones
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Milk keeps your teeth and bones healthy and all dairy products contain milk
how long do dairy products stay in your system
Human body cannot produce calcium but we can get calcium from the food we eat, particularly the dairy products. ^^
Excretion.Excretion
The natural way to avoid insomnia is to drink plenty of milk and eat plenty of dairy products. Milk and dairy products contains tryptophan, it is an essential amino acid which helps the body synthesizes and produces melatonin, this chemical triggers your body's sleep response.
The process of removing waste products from the body is called excretion. This process involves eliminating metabolic wastes such as carbon dioxide, urea, and excess salts from the body to maintain homeostasis.
Diffusion is an important process to your body because molecules enter your body cells and waste products are removed.