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Formula: BMI is a method of calculating the weight (in kilogram)
of the body according to the height (in nletre) of a person. It is inea-
sured from 18.5 to 24.9. A BMI of more than 25 is overweight and
less than 18.5 is underweight. This formula is normally used for adults
from 18 to 65 years old. However, it can be applied to teenagers.

If the weight and height of a girl is 34 kg and 1.49 m respectively,
then find her BM!.
BMI Formula: BMI = kg/m2

Therefore, BMI of a girl = 34/(1.49)2
BMI = 22.81

The girl has BMI between the range of 18.5 and 24.9. So, she has a
normal weight.

3.1.3Micronutrient Deficiency Disorder

Micronutrients are vitamins and minerals needed by the body in
very small an1ounts. However, they are vital to healthy develop-
ment, disease prevention, and well-being. Micronutrient deficien-
cies can cause several serious health issues.Night blindness, anemia,
and scurvy are the micronutrient deficiencies.

A. Anen1ia

Anemia is a condition in which the
body does not have enough red blood
cells. It is caused by the lower-than-
normal a1nount of hemoglobin. Due
to the lack of iron and vitamin B and
C in the body, red blood cells cannot
develop and anemia occurs. There
is a high possibility of this disorder
among children, teenagers and preg-
nant won1en. Anemia sufferers feel dizziness when they stand up.
They also feel weak and tired, breathing problen1s, irregular heart-
beats, chest pain and have a headache. The colour of the face, tongue,
nails and skin seems pale or yellow.
To preventanemia, children and pregnant women should have iron-

36 Health, Physical ai1d Creillive arts, grade 8