When individuals start following the norms of a larger group without applying their mind, it has lot of serious and negative consequences. Studies have found out that people who exhibit herd mentality had poor decision making abilities.
The belief that they are superior because of their birth has resulted in severe discrimination and oppression of the less fortunate humans. The saying of the Prophet (peace be on him) that all humans are equal puts an end to the illusion that some are superior just because of their birth.
Prophet Muhammad said: "Look at those below you and do not look at those above you, so you do not dismiss the blessings of God." In Psychology, this is called "Downward Social Comparison". Medical Research as found that "Downward Social Comparison" has shown to increase positive affect, heighten optimism, increase relationship satisfaction, and enhance self-esteem.
National Family Health Survey (NFHS-5) data says "1 out of every 4 people in India are overweight. Prophet Muhammad said: Fill (your stomach) with a third of food, a third of drink, and a third for air (leave it empty). Needless to say, following the guidance and advice of the Prophet will put an end to obesity and overweight problems in the society.