Parkinson's is known as a disorder that affects the central nervous system that affects movement. The estimated number of people who are living with Parkinson's disease is around 10 million people and 10% of that population lives in the United States.
A study back in 2011,"Olfactory loss in Parkinson's Disease", talks about how when the elderly lose their sense of smell it could be an early indicator on if they are developing Parkinson's. Although not everyone who has lost their sense of smell develops the disease. A recent study that included over 2,462 people over the age of 75, 1,510 were white while 952 were black. They were all required to do a smell test on 12 different