Although the sunscreen industry doesn't want you to know, sunscreen products may actually contribute to disease by creating a critical vitamin deficiency in the body.
Vitamin deficiency can cause loss of appetite, constipation and digestive problems, fatigue, muscle weakness, nerve troubles, shortness of breath poor memory and anemia.
Though nutritional yeast usually refers to commercial products, inadequately fed prisoners of war have used home-grown yeast to prevent vitamin deficiency.
