Rather than assume that disease resides only within the individual body, medical anthropologists explore the environmental, social, and cultural conditions that impact the experience of illness.
Environmental, social, and cultural conditions impact the experience of illness but I also believe being in a group rather than alone can play a part ones illness and thinking.
Because human experiences are varied and complex, we need a diversified tool kit to study them. Anthropology therefore comprises four subdisciplines: Some are more scientific (like biological anthropology), while others are more humanistic (like cultural anthropology).
Humans come from all different environments causing our "diverse tool kit" to be different for every race due to different circumstances and ways of living.