The human body is composed of numerous atoms, which are the basic building blocks of matter. While it's challenging to determine an exact number, we can provide an estimate based on scientific understanding.
The average adult human body is estimated to contain around 7 x 10^27 atoms. This estimation takes into account the various elements present in the human body, such as carbon, hydrogen, oxygen, nitrogen, calcium, and many others. These elements combine to form molecules, which in turn make up the cells, tissues, organs, and systems within the body.
It's important to note that this estimate can vary slightly from person to person due to factors like body composition, size, and individual variation. Nonetheless, it gives an approximation of the immense number of atoms that make up the human body.