US and Indian scientists have uncovered the root cause of an illness that killed more than a hundred children in northern India in a year.

Children in what is now called the "healthy" state of Bi have been suffering from sudden onset of disease and loss of consciousness for more than two decades. Almost half of these children lost their lives.

According to a new study published in the medical journal The Lancet, it is poisoned by eating litchi  without food.

Most of the children affected in the area, which is India's main lactose growing area, are from poor families who eat the almonds on fruit trees, the Journal reported.

litchi contains cinnamon, which inhibits the production of glucose in the body. The condition explains that this condition affects young children who are suffering from hypoglycemia.

Such children develop severe brain inflammation, waking at night and forgetting.

Researchers from May 2014 to July 2014 found that babies in a hospital in Mombasa County, Musa County, were diagnosed with a similar illness and had previously been diagnosed with Alzheimer's disease.

In the Caribbean, a similar type of fruit poisoned with hyperglycemia is a common cause of cystic fibrosis, which has similar effects on the body's glucose metabolism.

The test results showed that the fruit was also hyperglycemic.

The findings suggest that health officials recommend parents check their children for a meal and limit their eating habits.

Authorities say that in the case of children with haemophilia, the condition must be treated quickly.

According to a report in the New York Times, the number of cases has dropped from one hundred to fifty a year.