Fortifications are militaryconstructions designed for defensivewarfare. They have been used for many thousands of years, in a variety of increasingly complex designs. The practice of improving an area's defense is also known as "fortification". Many military installations are known as forts, although they are not always "fortified".
... often with ridiculous ideas about nutrition.
A more disturbing, and a practice more often acknowledged to be quackery, are the miracle cancer cures and ...