Histamine in Meat: What Really Influences Histamine Levels?

Histamine has become an increasingly common topic in conversations about raw feeding, fresh meat, pet food, and bone broth. You may have seen certain proteins labeled “high histamine,” warnings that bone broth becomes high in histamine because it cooks for hours, or lists suggesting that particular meats should always be avoided.

The science is more nuanced.

Histamine can be present in animal-based foods, but the type of protein alone does not determine how much histamine is present. Freshness, microbial activity, time, temperature, handling, processing, cooling, and storage can all influence histamine formation.

Understanding how histamine actually develops in food provides much more useful context than simply categorizing individual proteins as “high histamine” or “low histamine.”

What Is Histamine?

Histamine is a naturally occurring biogenic amine. Within the body, it plays a role in several normal physiological processes, including immune responses, digestion, and communication within the nervous system.

Histamine can also be present in food.

In animal proteins, certain microorganisms can convert the amino acid histidine into histamine. When the right microorganisms and conditions are present, histamine can accumulate over time.

This is why discussions about histamine in meat and pet food need to consider more than the animal species or protein listed on the package.

Why Can Histamine Be a Concern?

The presence of histamine is not automatically a problem.

The body has mechanisms for breaking down dietary histamine. However, when the amount consumed exceeds the body's ability to process it effectively, histamine can contribute to adverse reactions. Depending on the species, dose, and individual response, excessive histamine exposure may be associated with effects such as gastrointestinal upset, skin reactions, flushing, itching, or cardiovascular changes.

That distinction is important:

The presence of histamine isn’t automatically a concern. The amount—and how the body handles it—matters.

This is also why simply identifying a food as containing histamine doesn't tell us whether that food is inherently problematic.

How Does Histamine Form in Meat?

Histamine formation is largely a microbial process.

Animal tissues naturally contain amino acids, including histidine. Certain microorganisms possess enzymes capable of converting histidine into histamine.

For meaningful histamine accumulation to occur, however, those microorganisms need suitable conditions and enough time to act.

Several factors can therefore influence histamine levels in meat:

Freshness: The condition of the raw material when processing begins matters. Starting with fresh, properly handled meat reduces the opportunity for microbial activity before production.

Time: The longer meat spends under conditions that allow histamine-producing microorganisms to act, the greater the opportunity for histamine accumulation.

Temperature: Proper temperature control is critical for limiting microbial growth and activity.

Handling: Sanitation, processing practices, and how ingredients are handled throughout production can influence microbial conditions.

Processing: What happens to the meat between sourcing and the finished product matters—not simply which animal it came from.

Cooling: Cooked products need appropriate cooling after processing. Time and temperature continue to matter after cooking is complete.

Storage: Both the length of storage and the conditions under which a product is stored can affect its overall quality and microbial activity.

In other words, asking “Which meat is high in histamine?” can oversimplify the issue.

A better question is: What conditions has this meat experienced from sourcing through feeding?

Are Certain Meats Naturally “High Histamine”?

This is where many online high-histamine food lists can become misleading.

Different animal foods can have different concentrations of histidine and different potential for biogenic amine formation. But that does not mean every piece of a particular protein contains the same amount of histamine.

Histamine concentration can vary substantially depending on freshness, microbial activity, processing, temperature, and storage.

Fish provides a particularly well-established example. Certain fish species naturally contain relatively high concentrations of histidine, which creates the potential for significant histamine formation. But properly harvested, chilled, handled, and stored fish can contain very little histamine. Problems arise when conditions allow histamine-producing microorganisms to convert that histidine into histamine.

The same basic principle is important when thinking about fresh meat and raw pet food:

Potential for histamine formation is not the same as actual histamine concentration.

Without laboratory testing of a particular product, assigning a precise histamine level based solely on its protein source isn't justified.

Fresh Meat vs. Aged, Fermented, and Stored Meat

Freshness deserves particular attention when discussing biogenic amines in meat.

Fresh meat generally contains relatively low concentrations of histamine compared with foods in which microorganisms have had more time or favorable conditions to produce biogenic amines.

This is one reason aged, fermented, cured, or improperly stored animal products can have very different biogenic amine profiles from fresh meat.

It also demonstrates why two products made from the same animal protein do not necessarily have identical histamine concentrations.

A freshly processed piece of meat and a product that has undergone extended aging or fermentation may both say “beef” on the label, but the conditions those foods experienced are very different.

The protein name alone doesn't tell the entire story.

Is Bone Broth Really “High Histamine”?

Bone broth is frequently placed on high-histamine food lists because of its long cooking time.

The assumption is often:

Long cooking = more histamine.

But histamine formation does not work quite that simply.

Long cooking alone does not automatically create histamine.

Histamine is primarily produced when certain microorganisms convert histidine into histamine. Cooking temperatures can kill or control many of the microorganisms capable of producing histamine.

However, there is another important part of the equation:

Heat does not reliably destroy histamine that has already formed.

That means cooking fresh, properly handled ingredients for an extended period is not the same thing as allowing raw ingredients to sit for an extended period under conditions favorable to microbial activity.

The freshness and handling of the ingredients going into the bone broth matter.

And the process doesn't stop when cooking ends. Proper cooling and storage of the finished broth are also important.

When considering histamine in bone broth, the entire process should be considered:

Fresh ingredients → proper handling → temperature control → cooking → rapid cooling → proper storage

Cooking time by itself does not provide enough information to determine the histamine concentration of a finished bone broth.

Histamine Isn't Unique to Bone Broth

Another misconception is that histamine is somehow a bone-broth-specific issue.

It isn't.

Histamine and other biogenic amines can occur in many animal-based foods, including raw meat, fish, cooked meats, fermented products, processed foods, and pet foods.

The amount present can vary significantly depending on the food and the conditions it has experienced.

This is why singling out bone broth simply because it spends several hours cooking doesn't provide the full picture.

Dietary Histamine Is Not the Same as a Food Allergy

There is another distinction worth making when discussing histamine and pets.

Histamine is one of the compounds the body can release as part of an immune response, including during an allergic reaction.

Histamine can also be consumed in food.

Chemically, it is the same molecule, but the circumstances are different.

Eating a food that contains histamine does not automatically mean the body is having an allergic reaction to that food. Likewise, an allergic response to a particular protein involves the immune system and cannot be explained simply by the amount of histamine naturally present in that food.

Conflating dietary histamine with food allergies can make an already complicated subject even more confusing.

Why Freshness Matters at The Raw Concierge

At The Raw Concierge, freshness is an important part of how we approach production.

Our products are made to order. Rather than ordering large quantities of meat to sit in inventory waiting for future production, customer orders help determine what we need to make. We then order the meat required for that production.

In simple terms:

Orders come in → production needs are determined → fresh meat is ordered → products are made

This approach helps minimize unnecessary ingredient storage time while allowing us to prioritize freshness, proper handling, and temperature control throughout production.

That doesn't mean we make claims that our products contain zero histamine or a particular histamine concentration. Determining the actual histamine content of an individual food requires appropriate laboratory testing.

Instead, our focus is on the factors we can control: sourcing high-quality fresh ingredients, minimizing unnecessary storage, proper handling, maintaining appropriate temperatures, and following appropriate production and storage practices.

So, Should You Be Worried About Histamine in Meat?

Histamine is a normal biological compound, and its presence isn't automatically a reason for concern.

What matters is how much is present, how it got there, and how the individual animal responds to it.

Rather than assuming a particular meat, raw food, or bone broth is automatically “high histamine,” consider the conditions that actually influence histamine formation:

Freshness. Time. Temperature. Handling. Processing. Cooling. Storage.

Those factors provide a much more complete picture than the protein name alone.

When it comes to histamine in raw pet food and bone broth, the conversation shouldn't begin and end with a list of supposedly “good” and “bad” proteins.

Quality is about more than the protein on the label.