Immunoglobulin G
Immunoglobulin G
Immunoglobulin G (IgG) is the most common type of antibody found in your blood and other body fluids. It plays an important role in fighting bacterial and viral infections. IgG is transferred from you to your baby, providing long-term immune protection by neutralizing pathogens and helping your baby’s immune system recognize and remember them.
For more information, visit the benefits of breastfeeding for baby.
What to watch out for
- Infection response: If you are exposed to infections, your body will produce more IgG, which is then passed to your baby through your breastmilk. This helps provide additional protection for your baby. Learn more about breastfeeding while sick.
- Maintaining health: Your health and nutrition can impact the levels of IgG and other antibodies in your breastmilk. Maintaining a balanced diet and healthy lifestyle supports the quality of your milk.
Physical limitations or health circumstances
Certain conditions might affect the levels of IgG and other antibodies in your breastmilk:
- Chronic illnesses: Conditions that affect your immune system, such as autoimmune diseases or chronic infections, can influence the antibody composition of your breastmilk. Proper management of these conditions is essential.
- Medications: Some medications can impact immune function and the quality of antibodies in your breastmilk. Always discuss any medications with your healthcare provider to understand their effects on breastfeeding.
If you have concerns about health conditions or medications affecting IgG levels, discuss them with a healthcare professional to ensure appropriate care.
Other terms
- Antibodies: Proteins produced by the immune system to help fight infections. Breastmilk contains various antibodies that provide immune protection to your baby.
- Immunoglobulin A (IgA): Another important antibody in breastmilk that helps protect your baby’s mucous membranes, such as in the gut and respiratory tract.
- Colostrum: The first milk produced after birth, which is rich in antibodies and nutrients. It provides important immune support to your newborn. Learn more about colostrum.
- Passive immunity: The transfer of antibodies from mama to baby through breastmilk, helping to protect the baby from infections until their own immune system matures.
