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.
3. Vegan diets often rely heavily on soy. Soy, soy, the magical fruit. The more you eat, the moreâ¦ your hormones go berserk! 10 years ago, a vegan diet equated to vegetables interspersed with soy milk, soy cheese, soy bacon, soy protein, soy cereal, tofu, and tempeh.Now, the health problems with chronic soy consumption are becoming more mainstream an d many vegans have reduced their soy consumption.. Vegan diets often rely heavily on soy. Soy, soy, the magical fruit. The more you eat, the moreâ¦ your hormones go berserk! 10 years ago, a vegan diet equated to vegetables interspersed with soy milk, soy cheese, soy bacon, soy protein, soy cereal, tofu, and tempeh.