Why would a baby lose weight weighed 6lbs 5oz at birth now 18 days later weighs 2 oz?

There are multiple reasons why a baby might lose weight after birth. It's important to note that some weight loss is normal in the first few days after birth, as the baby adjusts to life outside the womb. However, a significant weight loss of 2 pounds 3 ounces over 18 days is concerning and requires immediate medical attention. Here are some possible reasons for this weight loss:

1. Dehydration: Babies can become dehydrated for various reasons, such as insufficient milk intake, diarrhea, or vomiting. Dehydration can lead to rapid weight loss and other health complications.

2. Medical Conditions: Certain medical conditions, such as infections, heart problems, or metabolic disorders, can affect a baby's ability to gain weight. These conditions require proper diagnosis and treatment.

3. Feeding Difficulties: Babies may have difficulty breastfeeding or bottle-feeding due to various factors, such as poor latch, tongue-tie, or inadequate milk supply. This can result in insufficient calorie intake and subsequent weight loss.

4. Growth Hormone Deficiency: In rare cases, babies may have a deficiency in growth hormone, which is responsible for growth and development. This condition requires specialized medical treatment.

5. Maternal Factors: Some maternal factors, such as gestational diabetes, preeclampsia, or thyroid problems, can impact fetal growth and weight gain.

It is crucial to consult a healthcare professional, such as a pediatrician or a lactation consultant, to determine the exact cause of the weight loss and receive appropriate guidance. The healthcare provider will evaluate the baby's health, assess feeding practices, and recommend necessary interventions to ensure proper weight gain and overall well-being.