Parkinson's disease (PD) is a type of movement disorder. It happens when nerve cells in the brain don't produce enough of a brain chemical called dopamine. Sometimes it is genetic, but most cases do not seem to run in families. Exposure to chemicals in the environment might play a role.
Why Vegans are Often Deficient in Vitamin B12. The few plant foods that are sources of B12 are actually B12 analogs. An analog is a substance that blocks the uptake of true B12, so your body's need for the nutrient actually increases.
A vegan diet is one that consists of only plant-derived foods. Vegans donât use or consume any animals or animal products including flesh (land or sea animals), milk, eggs, or honey. Eating vegan doesn't require breaking the bank or moving to a big city. The most nutritious and inexpensive vegan foods which can be found in any supermarket, are fresh produce, grains, legumes and nuts/seeds. These should make up the bulk of the diet for optimum health. Vegan processed foods in the form of soy hot dogs, vegan &cheeses, desserts, etc are best eaten only on occasion.