Reasons for Abnormal Weightloss in Children

Weight loss is generally due to a decrease in your body fat or fluid. Unintentional weight loss amongst children should be taken seriously as it could be a symptom of an illness. The National Institute of Health (NIH) recommends you contact your doctor immediately if you find your child has lost 5 percent of his total weight in six months.

Breast-fed Infants

• Breastfed infants lose more weight after birth

  According to a study published on the NIH website, breast-fed infants often lose weight right after birth since the mother's milk generally takes three days to come in. However, if this weight loss is more than 10 percent in the first 72 hours, measures should be taken to feed the infant properly through other means.

Malnutrition

• Make sure your child gets proper meals.

  Check if your child eats his food properly. Make sure she gets a balanced diet. A lack of protein, which is essential for growth, can lead to weight loss.

Diarrhea

• Diarrhea or loose stools can cause severe dehydration in children, which can be fatal. It occurs due to viral infections. Keep your child hydrated and contact the doctor immediately if your child has diarrhea.

Eating Disorders

• Teenagers often suffer from eating disorders

  As cited at wednet.edu, five million Americans suffer from a type of eating disorder like anorexia or bulimia. The website also states that 40 percent of fourth graders diet sometimes. Help your children with their body images if you suspect them of having an eating disorder.

Drug Abuse

• Drug abuse also leads to weight loss

  An alarming 53 percent of twelfth graders reported using drugs in 2005. Prolonged use of drugs can lead to weight loss.

Cancer

• Although childhood cancer is rare, continued unexplained weight loss may be a sign of cancer. If you notice any sudden or persistent changes in your child's health, contact your doctor immediately.