There is nothing worse than a sick, crying baby that you can't figure out what's wrong with. Food allergy is common in breastfed babies. If a mom ate a peanut butter sandwich, there might be some signs of allergy in her baby. For a mom who is breastfeeding, it can be scary if her baby is allergic to something she is eating. No mom wants to eat something that will make her baby sick. Some frequent colds, constipation, eczema, and other allergy-related signs and symptoms may be caused by a recent rise in infant food allergies. 
Even though most new babies don't get food allergy testing because the results aren't useful, breastfeeding moms can try to avoid allergens to help their babies' symptoms.
- Most Common Foods That Cause Allergies in Babies
Milk, dairy, eggs, peanuts, tree nuts, fish, shellfish, soy, soy products, and wheat are the foods that babies are most likely to be allergic to. If your baby has food allergy symptoms, getting rid of some or all of the most common allergens could make a big difference in her health. But the list of foods that make mom sick limits what she can eat to the point where it could hurt her health. If you think your baby might have food allergies, it's best to talk to an allergist and plan to "test" foods. A typical plan starts with mom getting rid of all foods that could be making her sick. She then adds one food at a time to her diet and writes down how her baby reacts. Because of this, it's important for all breastfeeding moms to know what to look for and what to do if they think their baby might have a food allergy.
- How to tell if a breastfed baby is allergic to peanuts?
If your baby has an allergy to peanuts, you will see signs of it almost right away. Some infants will show signs of an allergy the first time they eat peanuts or nuts, while others won't show signs until the second time. Watch out for hives around your baby's mouth, nose, and eyes that could spread to other parts of their body.
- Lips, eyes, and face swell up
- A runny or clogged nose, sneezing, and watery eyes
- Itchy lips and a sore throat
- Sickness, throwing up, and diarrhea
It's important to watch for signs that a breastfed baby can't handle certain foods. If your newborn seems uncomfortable after eating, it's important to keep a close eye on them to see if anything is wrong.
- Signs that a baby is allergic to food
When the body can't digest certain foods for a variety of reasons, this is called food intolerance. The symptoms of an intolerance are similar to those of an allergy, but they won't be life-threatening. Babies who are allergic to certain foods will show different symptoms, and each food will show different symptoms. How bad the symptoms are will also depend on how much food or drink the baby is exposed to. These symptoms need to be checked out by a doctor:
- Hives or welts
- Red skin or a rash Swelling of the face, tongue, or lips
- Getting sick or having diarrhea
- Having a cough or wheezing
- Trouble breathing
- Getting lost in thought
An allergy is different from an intolerance. Allergies are much more serious and less common than intolerances. Allergies make symptoms worse and can even be life-threatening at times. Even though it doesn't happen often, food allergies in breastfed babies can cause both emotional and physical pain. If a baby drinks breast milk that has traces of allergens, it can develop allergy symptoms. 
If your baby has any of the following symptoms after you feed them, it's probably because they are allergic to something you ate. Babies can get allergies from breastfeeding if their mothers eat or drink something they are allergic to or can't handle. Allergic reactions can be mild or severe, and they may not happen the first time a baby comes in contact with an allergen. Instead, they may get worse over time. However, it's more possible that your infant is actually reacting to something in your diet rather than the breast milk itself. The allergen is passed on to the baby through the mother's breast milk. So, if you eat a peanut butter sandwich and then give it to your child, who might be allergic to peanuts, it could make them sick.
- Do food allergens get into the baby through breast milk?
Yes, babies can get food allergies from their mothers' milk. If a baby is allergic to peanuts, for example, the baby will react when mom eats peanuts. Small reactions can happen, like short-term diarrhea or constipation. Reactions can also be very bad, and in the worst cases, they can cause anaphylaxis.
- Food Allergies in Breastfed Babies
There isn't usually a strong link between breastfeeding and food allergies, and what the mother eats usually doesn't affect what the baby eats. In fact, most studies say that breastfeeding your child can help keep them from getting food allergies. Some mothers, however, start to see signs of food intolerance or allergy in their breastfed babies, usually right after feeding. 
- Most Frequent Food Allergies in Babies
Your baby can be allergic to a wide range of foods, but these are the ones that happen most often:
- Milks or Eggs
- Peanuts and nuts from trees
- Cereals that have gluten in them
- Shellfish
- Some other fish and soy
- Glutens or Soya
- Sesame, kiwi, and lupin can also cause allergies in children.
What you can do about allergies in breastfed babies First of all, don't worry if your baby has food sensitivities, intolerances, or allergies. This doesn't mean that you have to stop breastfeeding or that your baby will go hungry. If your baby shows any of the above signs, keep track of how often it happens and what you ate before feeding. You should try to figure out what is causing these signs and symptoms. So, you can keep your child from coming into contact with these things again. Also, remember that there is a difference between not being able to eat something and being allergic to it. If you have allergy symptoms after a feed, you should make sure to see a doctor. It's important to remember that if your baby has a reaction to allergens in your breast milk, it's not your fault. 
Some moms feel bad about eating foods that hurt or upset their babies, but there are many options available today, like special formulas or changing your diet to make room for feeds when needed. With the help of your doctor, you can figure out what's causing the symptoms and work on ways to get rid of them and stop them from happening again.