Diabetes mellitus is a group of diseases that causes a person to have high levels of sugar (glucose) in the blood, or hyperglycemia. Diabetes is sometimes referred to as the “silent killer” because it can progress slowly and without warning. Hyperglycemia or high levels of blood sugar damage the blood vessels in the kidneys, heart, eyes and nervous system leading to heart disease, peripheral arterial disease, kidney failure and blindness. Note: Despite all advances in stem cells research and the application of these therapies in many countries all over the world, stem cells therapies are not legally approved yet in San Diego, Los Angeles, Chicago, Dallas, New York, Jacksonville, Seattle, Houston, San Francisco, Salt Lake City, Miami, Beverly Hills and other US cities. However, stem cell treatments are legal in Costa Rica.