A bowl of steaming hot noodles with beef broth, a freshly made slice of pizza with pepperoni, and a delicious stir-fried seafood dish with bean sprouts– are all examples of dishes that are high in glutamate. Your body naturally produces glutamate. This amino acid plays an important role in human physiology. It is involved in learning and memory, and it helps regulate nerve cell activity. It is also a key player in the immune system (5). It is also a neurotransmitter, which means it helps transmit signals between nerve cells in the brain (5). However, too much glutamate can be harmful. If you’re wondering what exactly “too much” means, researchers are still trying to determine that. The current consensus is that consuming a lot of umami-tasting foods can lead to excessive glutamate levels in your brain. Here’s everything you need to know about high glutamate foods, including the ones you should avoid.
Glutamate is a non-essential amino acid, meaning your body can make it on its own, that plays several important roles in the body. It regulates the receptors of other important neurotransmitters such as (5):
Glutamate also serves as an energy source for cells and is involved in protein synthesis.
The problem with glutamate is that too much of it may cause problems for some people. When there’s too much glutamate in the brain, it can lead to what’s known as “excitotoxicity.” This occurs when nerve cells are over-excited and start to die (2).
Excitotoxicity has been hypothesized to play a role in neurodegenerative diseases such as Alzheimer’s and Parkinson’s. Some believe it can also cause migraines, seizures, and strokes (2).
While more research needs to be done to determine the exact level of glutamate that is harmful and whether it is possible to reach that level from food intake, some people feel that consuming too much of it is not a good idea.
Here are some conditions that have been studied in association with this amino acid:
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Glutamate is found in high concentrations in some foods, especially those that are highly processed or have been stored for a long time. Foods that contain high levels of glutamate include:
Soybeans and soy products such as tofu, tempeh, and soy sauce are high in glutamic acid.
Certain cheeses, like parmesan and Roquefort, are particularly high in glutamate. Lower glutamate alternatives include cheddar.
Peas are high in glutamic acid.
Walnuts, cashews, and peanuts are high in glutamic acid.
Tomatoes and mushrooms are especially high in glutamic acid, while potatoes may also cause problems for come people.
Meats are naturally high in glutamate, but they can contain even more if they are processed or cured with chemicals such as monosodium glutamate (MSG).
Rabbit and turkey are the highest in glutamate while lamb and beef are lower. Pork is in the middle, but processed pork products like ham are high in glutamate.
Many processed foods contain high levels of glutamate. This includes MSG (monosodium glutamate), a common food additive.
MSG is often added to Chinese food, canned soups and vegetables, processed meats, and some snacks.
Other food additives that contain glutamate include (8):
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A low glutamate diet can be difficult to follow because glutamate is found in many common foods. You’ll need to avoid all processed and fermented foods, as well as any foods that are high in protein.
Here’s what you can eat:
Whole fruits are a great source of fiber, vitamins, and antioxidants. Eat a variety of fruits, preferably fresh or frozen, to get the most nutrients.
Green leafy vegetables, broccoli, Brussels sprouts, and other high-fiber veggies are a good choice for a low glutamate diet. These foods are nutrient-dense and can help you feel full and satisfied.
You’ll need to limit your protein intake on a low glutamate diet. Choose lean proteins, such as chicken and fish. Although these meats have some glutamate, they are lower in glutamic acid than other options.
Avocados, olive oil, and other healthy fats can help you feel full and satisfied. Use these in moderation, as they are high in calories.
Herbs and spices add flavor to food without adding glutamate. Fresh or dried herbs can be used to flavor soups, salads, and other dishes.
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If you’re concerned about your glutamate intake, there are several things you can do to reduce it.
Processed foods are often high in glutamate because it is used as a flavor enhancer.
These foods include:
MSG is a common food additive that contains high levels of glutamate. It’s often added to Chinese food, soups, and processed meats.
Food labels will often list “glutamate” or “MSG” as an ingredient. If you see either of these listed, it’s best to avoid the product.
Whole foods are a great way to reduce your glutamate intake because they are naturally low in this amino acid. Focus on eating plenty of fruits, vegetables, whole grains, and lean proteins.
Soy sauce is a common condiment that is high in glutamate. If you’re concerned about your intake, it’s best to limit your consumption or avoid it altogether.
Aspartame is an artificial sweetener that some people say has similar effect to glutamate. It’s often used in diet sodas and sugar-free products.
If you’re really concerned about your intake, there are several glutamate-free products available on the market.
These include:
If you’re concerned about your glutamate intake, talk to your doctor. They can help you determine if you need to make any changes to your diet.
Glutamate is a naturally occurring amino acid that is found in many foods. While it is safe for most people, some may feel they need to limit their intake.
Processed foods, MSG, and soy and yeast extracts are all sources of high levels of glutamate. If you’re concerned about your intake, it’s best to avoid or limit these products.
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