We always apparently wonder during our lives as to why we have been exactly how were. Why do we behave in the certain method in which others don't? Why is it that I and my sibling or my best friend has different likes, choices and hobbies? And most importantly, why are we different from each other in any way? In the case of RA, you may feel tired or suffer from loss of appetite due to inflammation caused by immune system activity. You may also become anemic - meaning you have fewer red blood cells - or have a mild fever. Severe RA may lead to joint deformities, if not treated. For centuries, saltpeter may be combined with food given it?s a preservative. Before the invention of the refrigerator, kitchens routinely salted meat to hold it edible throughout the long winter time. Today, the traditional cans of corned beef still contain saltpeter ? it has been man?s friend when used in moderation. Saltpeter first emerged in China about 2,000 years ago. Early experiments saw Chinese chemists having the best along with the worst results, according to your point of view. The compost heaps containing decomposing organic matter were covered and spiked with dung and urine. When the resulting "mess" was filtered and wood ash added, this became wonderful fertilizer and also the foundation of fireworks for celebrations. Later, naturally, it made explosives for war.