By Noralyn Onto Dudt The advent of Molecular Biology and the Human Genome Project has dramatically increased our understanding of the mechanisms of human disease. As the underlying molecular causes for many diseases have been elucidated, it is now clear that the mechanism of a disease is influenced by genetics, environment, and life habits. For example, even though the causes of Parkinson disease are still a mystery, it is believed that about 15% of people may have a genetic mutation that puts them at risk. Head injuries or exposure to certain environmental toxins may play a role as well. Similarly, research studies indicate that 15 to 20 % of those with AMD ( age-related macular degeneration) have at least one first-degree relative ( like a sibling or parent) who suffers from it. Another example is when people may pick up a virus or a bacteria but only a few of them may contract a certain disease. Research shows that genetics play a role: some genes are switched off in so
Online edition of The Ilocos Times, a community newspaper based in Laoag City, Ilocos Norte.