CHAPTER 2
LITERATURE REVIEW
2.1 ANAEMIA
According to Schoorl et al., (2015), anaemia affects 1.62 billion people which are 25% of world population. The word anaemia can be defined as a condition where the number of red blood cells (RBC) or total haemoglobin level is under the normal value (Aldallal, 2016). According to the World Health Organization (WHO), anaemia occurs when haemoglobin level in men (older than 15 years old) is less than 130g/l (
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