Hiya there!
Well, for one, corporate greed. In the media, like TV, movies, artists, etc., are usually very physically attractive in most people's opinion. This can lead to pressure on the rest of society to live up to the extremely high standards, as well as many self-depreciating thoughts about how oneself isn't good enough. Actually, this has been happening for hundreds, if not thousands of years! Distribution of magazines and books have put forth what one must attain. I've attached a picture of a corset ad from circa 1850.
In ancient cultures, like Sparta, being physically active and fit was necessary to fit into society, especially for men (which grew up to be strong, noble soldiers). A huge emphasis on being the greatest was placed on everyone.
But, being attractive and being fit are two different things. Having an active lifestyle can improve your life in countless ways, from improving your mood to lowering your risk of obtaining certain diseases.
Answer:
Immune reaction.
Explanation:
Plasma cell disorders are generally uncommon. They begin at that time when a single plasma cell multiplies excessively. This results in a group of genetically identical cells (called a clone), which produces a large quantity of a single type of antibody (immunoglobulin). Plasma cells develop from B cells (B lymphocytes), which is a type of white blood cell that usually produces antibodies. These proteins help the body to fight against infection. This means they help in the immune system.
In plasma cell disorders, one clone of plasma cells repeatedly multiply, which can’t be controlled. As a result, these clone creates a vast amount of a single antibody (monoclonal antibody) which is known as the M-protein. In some cases (such as with monoclonal gammopathies), the antibody produced remains incomplete, consisting of only light chains or heavy chains (fully functional antibodies usually comprised of two pairs of two different chains called a light chain and heavy chain). The abnormal plasma cells and the antibodies which they produce are limited to one type, and levels of other kinds of antibodies that help in the fight against infections start falling.
People with plasma cell disorders are often at higher risk of infections than others. So, from this discussion, we can say that plasma cell disorder affects the immune system.