These include food distribution among low-income communities, micronutrient supplementation, and fortification of food. While other include both micronutrient deficiencies and protein energy malnutrition in its definition. Insects have a high nutritional value, dense protein content and micronutrient and probiotic potential. Boron deficiency is a common deficiency of the micronutrient boron in plants. Terms such as nutrient rich and micronutrient dense refer to similar properties. Although it is toxic in large doses, selenium is an essential micronutrient for animals. Selenium is an essential micronutrient in mammals, but is also recognized as toxic in excess. Rates of micronutrient deficiencies are also high. Soil zinc is an essential micronutrient for crops. Anemia is used as a marker for overall micronutrient deficiency. PEM is often associated with micronutrient deficiency. Selenate is the form required by organisms that need selenium as a micronutrient. This can lead to micronutrient deficiencies. The symptoms of micronutrient deficiencies depend on the micronutrient that is lacking. Currently this includes charities that work to treat neglected diseases (NTDs), malaria and micronutrient deficiency.