The mouth starts the digestion process by breaking food down into a more easily digestible form. It does this through a combination of mechanical and chemical digestion. After people take food in ...

Chemical digestion occurs when the body uses enzymes to break down certain molecules, such as carbohydrates. This process allows the bloodstream to absorb smaller molecules to transport around the ...

Smoking damages the digestive system, which can lead to chronic inflammation and stomach pain. Quitting smoking can provide relief for stomach pain as well as other health benefits. Smoking has ...