Gram positive bacteria, which cause tooth decay, acne, tuberculosis, Streptococcus pneumoniae and leprosy are all killed by anacardic chemicals present in cashew nuts which are actually seeds.
Cashew nuts are actually the kidney-shaped seeds that adhere to the bottom of the cashew apple, the fruit of the cashew tree, which is native to the coastal areas of northeastern Brazil.
You have probably noticed that cashews in the shell are not available in stores. This is because these nuts are always sold pre-shelled since the interior of their shells contains a caustic resin, known as cashew balm, which must be carefully removed before they are fit for consumption. This caustic resin is actually used in industry to make varnishes and insecticides. Today, the leading commercial producers of cashews are India, Brazil, Mozambique, Tanzania and Nigeria.
Cashews are an excellent source of copper, and a good source of phosphorus, magnesium, manganese, and zinc.
Not only do cashews have a lower fat content than most other nuts, approximately 82% of their fat is unsaturated fatty acids, plus about 66% of this unsaturated fatty acid content are heart-healthy monounsaturated fats, similar to those found in olive oil. Studies of diabetic patients show that monounsaturated fat, when added to a low-fat diet, can help to reduce high triglyceride levels. Triglycerides are a form in which fats are carried in the blood, and high triglyceride levels are associated with an increased risk for heart disease, so ensuring you have some monounsaturated fats in your diet by enjoying cashews is a good idea, especially for persons with diabetes.
For the rest of the story: http://wakeup-world.com/2014/05/04/the-one-bacteria-that-causes-tooth-decay-acne-tuberculosis-can-be-killed-by-this-one-seed/