Hyperkalemia, an excess of potassium in the body, can occur when the two types of drugs are combined.

FORBES: Pfizer's Heart Failure Flop

Pegvisomant (Somavert) blocks the effect of excess growth hormone on the body.

CNN: Pituitary tumors

There are helpful primers on the role of different fats, the importance of protein and how excess weight plays into harmful inflammation in the body, which is linked to heart disease and other chronic conditions.

WSJ: Healthy Reader: 'Thinner This Year,' by Chris Crowley and Jen Sacheck

This suggests that if the uterus was "rested" the body might overcome some of the contraction problems caused by excess acid.

BBC: Making childbirth safer and easier for women

In light of all this, they suggest that insulin resistance, like obesity, should be viewed not as a pathology but as an adaptive response by the body to an excess of circulating lipids.

ECONOMIST: Metabolic syndrome

If your weight is excessive then the implication is that the excess is fat and, of course, people's body composition varies enormously and BMI doesn't know anything about that so it's a very imprecise index when applied to individuals.

BBC: BMI: Does the Body Mass Index need fixing?

This excess release of carbon dioxide is a sign that the muscles have become more acidic, which the body finds stressful.

WSJ: Hard-Wired to Hate Exercise?

While burn damage is normally patched with pieces of excess skin from a person's own body, this does not work if the whole face needs to be covered -- the skin of the entire back is less than half of what would be needed to cover the full face and scalp, Siemionow said.

CNN: Face transplant patient regains self-confidence

"We know that excess body weight adversely affects every organ system in the body, " says Dr. Gary Foster, director of Temple University's Center for Obesity Research and Education in Philadelphia.

CNN: Reversing diabetes is possible