Digestion is the physiological process by which food is broken down, mechanically and chemically, into particles small enough to pass through the walls of the intestinal tract and into the blood. Once in the bloodstream, these tiny particles can then...

Digestion is the process of breaking down food into molecules that cells can absorb. Carbohydrates, proteins, nucleic acids, and fats are broken down into their smallest units (monomers) by digestive enzymes. These hydrolytic enzymes break chemical...

The process by which substances are taken into the tissues of organisms is called absorption. It is essential to functions such as digestion, circulation, and respiration. During digestion, valuable nutrients are absorbed across the epithelial lining...

Absorption, or more generally "sorption," is the process by which one material (the sorbent) takes up and retains another (the sorbate) to form a homogenous concentration at equilibrium. The general term is "sorption,"...

Digestion is the process of metabolism whereby a biological entity processes a substance in order to chemically and mechanically convert the substance for the body to use. Preparation for digestion begins with the cephalic phase producing saliva and...

Digestive remedies accounted for a sizable share of the over-the-counter market last year, although growth was uneven across the various segments. The big story in the category, of course, was the switch of Procter & Gamble Co.'s Prilosec from prescription to over-the-counter...

DOW 9340.55 UP 219.62 BONDS 30-YEAR TREASURIES 5.12% YIELD 0.07 DOLLAR VS. JAPANESE YEN (N.Y.) 114.15 YEN 0.58 YEN The Health Care Financing Administration, which runs Medicare, is preparing to phase in a change in how it pays HMOs, setting reimbursements for...

An Athens woman who underwent a rare transplant of her digestive system at a Miami hospital last month said she had her first regular meal Friday since the surgery and walked some laps around the ward. Sara Ultz, 28, was...