Consider the following statement and select the incorrect ones.

1)    Kwashiorkor is a disease affecting infants, their brain development and mental capacities are retarded. Their bodies swell due to retention of water

2)    Marasmus  is a similar disease as kwashiorkor in which the skin becomes dark.

3)    Both are due to lack of feeding of mother’s milk.

4)    Anaemia is due to lack of intake of Proteins.

5)    Hyponatremia is an increased loss of sodium from the body by vomiting etc..Leads to dehydration, low BP etc.

Which of the statement(s) given above are incorrect?