In the Universe there exists 118 elements, all of which can be detected in stars using spectral analysis.
These elements exist everywhere and 94 of them are found on earth. Human beings are formed from just 11 of these, as indeed is all other life on Earth. These elements which form us and other life are; oxygen, carbon, hydrogen, nitrogen, calcium, and phosphorus. Only about 0.85% is composed of another five elements; potassium, sulphur, sodium, chlorine, and magnesium. All 11 are necessary for life.
These elements are mostly formed within stars through the process of nuclear fusion, with the heavier elements like gold being formed in massive stars, many times larger than our own Sun. These elements are dispersed across the universe during Supernova events, where the necessary pressures and temperatures are achieved to fuse lighter elements into heavier ones such as iron, uranium and gold.
We are all elemental creatures, made from the dust of stars.