Examples of good introductions
:
interesting
sentence
background
information
thesis
statement
of intent
Vitamin D Deficiency
Every schoolboy knows that vitamin D is the sunshine vitamin, and that
vitamin D is essential for good health. Until the twentieth century, however.
Little was known about this important vitamin, and people who lived in
temperate climates tended to suffer every winter from the lack of vitamin D.
Even today, although knowledge about vitamin D has been available for
more than fifty years, many people still suffer from vitamin D deficiencies.
This essay will describe the chemical makeup of vitamin D, the group of
diseases called rickets that afflict people who are deficient in this vitamin,
and solutions to avoid such deficiencies.
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