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.
Lacto vegetarian: Lacto vegetarians donât eat meat or eggs, but do eat dairy products. Ovo vegetarian: Ovo vegetarians donât eat meat or dairy, but do eat eggs. Vegan: Vegans avoid eating any animal products. They donât eat any meat products, milk, cheese, eggs, honey, or gelatin.Many vegans (and some other types of vegetarians) choose not to wear clothes containing animal products, such as leather, wool, or silk, or wear makeup that may have been tested on animals.esciâvegetarian: Pesciâvegetarians eat fish, dairy, and eggs but donât eat meat or poultry. Lactoâovo vegetarian: Lactoâovo vegetarians donât eat meat, but do eat eggs and dairy products (ovo means eggs and lacto means dairy).