If someone dosent eat for a long time and they suddenly start eating a ton of food what could possibly happen to said person

According to positive psychologists, an individual’s subjective well-being consists of one’s and a. overall level of happiness . . life satisfaction b. goal accomplishments . . money earned c. idea of self-importance . . social acceptance d. level of self-esteem . . pride sorry am i just not getting it or is this worded confusingly xd

What is the answer to this particular question i have in health

How could you find out if that advice is based in scientific evidence?