Not quite 200 words, but I'm sure you can add a couple sentences and then you'll be good to go:
When one counts their blessings, it may be easy to overlook good health as a blessing, for people often do not realize the worth of something until it is gone. For example, someone may not realize how much they value another person until they’ve lost them. Likewise, sometimes we forget what a blessing health is until we become ill or injured.
Some blessings are given to us, and some are cultivated. Some people have a harder time maintaining a healthy lifestyle than others, due to genetics or socioeconomic status. In the case of genetics, some people were fortunate enough to be born with good genetics, whereas some people have a greater predisposition towards certain disorders and have weaker immune systems. People who live in poverty also have difficulty maintaining good health, for they do not always have the luxury of having free time to exercise, access to fresh, healthy foods, or the money to receive adequate healthcare. Therefore, health is a blessing because it reflects how fortunate someone is in multiple aspects of life.