Recent research suggests that babies born via cesarean section are more at risk for developing allergies. Why might this be?

• A. C-sections babies are not exposed to the mother's vaginal microbiota.
• B. Early exposure to normal microorganisms of the microbiome will allow a baby's microbiome to form quicker.
• C. A less developed microbiome causes an individual to be more sensitive and reactive to allergens.
• D. All of the above.

Answer: (D)

Verified step by step guidance

1. Understand that the human microbiome plays a crucial role in the development of the immune system. Early exposure to a diverse range of microorganisms helps in training the immune system to distinguish between harmful and harmless substances.
2. Recognize that during a vaginal birth, a baby is exposed to the mother's vaginal microbiota, which is a significant source of beneficial bacteria that colonize the baby's gut and skin, aiding in the development of a healthy microbiome.
3. Consider that babies born via cesarean section miss this initial exposure to the mother's vaginal microbiota, which can delay the establishment of their own microbiome.
4. Acknowledge that a less developed microbiome in early life can lead to an immature immune system, making the individual more susceptible to allergies and other immune-related conditions.
5. Conclude that all the given statements are interconnected and contribute to the understanding that cesarean section births may increase the risk of developing allergies due to the lack of early exposure to the mother's microbiota.