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Walnuts are moderately high in tyramine, especially when they’re overripe, fermented, or stored for long periods.
For most people, the amount of tyramine in walnuts isn’t a concern.
But if you’re sensitive to tyramine or follow a low-tyramine diet, you may need to pay closer attention to how many walnuts you eat.
Fresh walnuts generally contain lower levels of tyramine compared to aged or improperly stored ones.
So the answer to “are walnuts high in tyramine” depends on the freshness and how they’ve been handled.
In this post, we’ll look at whether walnuts are high in tyramine, why tyramine matters, and how you can enjoy walnuts safely if you’re watching your intake.
Let’s dig in.
Are Walnuts High in Tyramine?
Walnuts do contain tyramine, but whether they’re considered “high” depends on a few factors.
Tyramine is a naturally occurring compound that forms when the amino acid tyrosine breaks down.
This breakdown happens more in foods that are aged, fermented, or stored for extended periods.
Walnuts aren’t fermented like cheese or cured meats, so their tyramine levels are usually moderate, not extreme.
That said, walnuts can still be a problem for people who are highly sensitive to tyramine.
The tyramine content in walnuts tends to rise as they age or if they’re stored in warm, humid conditions.
Fresh walnuts right out of the shell have lower tyramine compared to walnuts that have been sitting in a pantry for months.
So when people ask “are walnuts high in tyramine,” the honest answer is: it depends on the walnut.
1. Fresh Walnuts Have Lower Tyramine
Freshly shelled walnuts contain the least amount of tyramine.
If you crack open a walnut today and eat it, the tyramine level is relatively low.
This is because tyramine builds up over time as proteins break down.
The fresher the walnut, the less tyramine it will have.
2. Older Walnuts Have More Tyramine
Walnuts that have been stored for a long time tend to have higher tyramine levels.
As walnuts age, natural enzymatic processes continue breaking down compounds inside the nut.
This leads to a gradual increase in tyramine.
So if you’re wondering “are walnuts high in tyramine,” old walnuts are more likely to be higher than fresh ones.
3. Roasting and Processing Can Affect Levels
Roasted walnuts may have slightly different tyramine levels than raw ones.
The heat from roasting can either reduce or concentrate tyramine depending on the method and duration.
But generally, roasted walnuts don’t become extremely high in tyramine.
However, if they’re roasted with added oils or fermented ingredients, that could change things.
Why Tyramine Matters for Some People
Tyramine is a compound that can affect blood pressure and nerve function.
For most people, the body breaks down tyramine efficiently using an enzyme called monoamine oxidase (MAO).
But some people don’t break down tyramine as effectively.
This can lead to tyramine building up in the body and causing issues like headaches, migraines, or elevated blood pressure.
People who take MAO inhibitors (a type of antidepressant) are often told to watch their tyramine intake closely.
The same goes for people with certain types of migraines or those following a low-tyramine diet for other health reasons.
If you’re in this group, knowing whether walnuts are high in tyramine becomes much more important.
1. MAO Inhibitors and Tyramine Sensitivity
MAO inhibitors block the enzyme that breaks down tyramine.
When that enzyme is blocked, tyramine from food can accumulate in the bloodstream.
This can cause a sudden spike in blood pressure, which is dangerous.
That’s why people on MAO inhibitors are often given a list of foods to avoid or limit.
Walnuts may or may not be on that list depending on the specific guidance from their doctor.
2. Migraine Triggers and Tyramine
Tyramine is a known trigger for some migraine sufferers.
For these people, eating foods high in tyramine can bring on a headache.
Walnuts, especially older ones, could potentially trigger migraines in sensitive individuals.
So if you get migraines and notice they happen after eating walnuts, tyramine could be the culprit.
3. Blood Pressure Concerns
Tyramine can cause blood vessels to constrict, which raises blood pressure.
For people with already high blood pressure or those on certain medications, this can be a problem.
Eating walnuts in moderation is usually fine, but eating large amounts of aged walnuts could be risky.
How to Enjoy Walnuts on a Low-Tyramine Diet
If you’re watching your tyramine intake, you don’t necessarily have to give up walnuts entirely.
You just need to be smart about how you choose and store them.
1. Choose Fresh Walnuts
Buy walnuts that are as fresh as possible.
Look for walnuts that are still in the shell if you can, since they stay fresher longer.
Fresh walnuts have lower tyramine, so they’re a safer choice.
2. Store Them Properly
Keep walnuts in a cool, dry place or in the refrigerator.
This slows down the breakdown process that creates tyramine.
Avoid storing walnuts in warm, humid environments where they’ll age faster.
3. Eat Them in Moderation
Even if walnuts aren’t extremely high in tyramine, eating them in large quantities could still add up.
A small handful now and then is usually fine for most people.
If you’re highly sensitive, you might want to limit walnuts to occasional treats rather than daily snacks.
4. Watch for Symptoms
Pay attention to how you feel after eating walnuts.
If you notice headaches, flushing, or other symptoms, tyramine could be the reason.
Keeping a food diary can help you figure out whether walnuts are a trigger for you.
So, Are Walnuts High in Tyramine?
Walnuts are moderately high in tyramine, especially when they’re older or stored poorly.
For most people, the tyramine in walnuts isn’t a problem.
But if you’re sensitive to tyramine or follow a low-tyramine diet, you should be mindful of how many walnuts you eat and how fresh they are.
Fresh walnuts have less tyramine, while aged or improperly stored walnuts have more.
By choosing fresh walnuts and storing them properly, you can enjoy them without worrying too much about tyramine.
Hope this post has helped you understand whether walnuts are high in tyramine and how to handle them if you’re watching your intake.