In one research, it is found that children whose weight is very low during birth, they are more at risk of cardiovascular disease. Apart from this, their ability to speak, focus and show coordination are weak. At birth the normal weight of children is 2.5 kg.

Research conducted at Umiya University in Sweden said that cognitive problems can occur in the neonatals weighing less than two kilograms. Apart from this, they may also develop diabetes and cardiovascular diseases. Key researcher Josephine Starnberg said that the low-weight newborns, who were given iron supplements, had a complaint of low blood pressure at the age of going to school.

Researchers have concluded this after studying the statistics of 285 children. At birth their weight was between two and a half kilos. Experts also studied the data of 100 other children of normal weight. All these figures related to weight, length, physical structure, blood pressure, blood sugar and insulin were taken. The IQ of these children and that of normal weight children was also computed. The children who are Under-Weighted are susceptible to diseases till the age of seven years.