Eating Fish the Wrong Way Could Harm Your Health: These 3 Parts May Be More Dangerous Than You Think

Fish Is Healthy—But Not Every Part Should Be Eaten

Fish is widely recognized as one of the healthiest foods available. Rich in high-quality protein, omega-3 fatty acids, vitamins, and minerals, fish can support heart health, brain function, and overall wellness.

However, nutrition experts warn that eating fish incorrectly may expose people to unwanted substances and potential health risks. While most edible fish meat is safe when properly prepared, certain parts of the fish may accumulate toxins, parasites, or contaminants.

Understanding which parts to avoid can help you enjoy the benefits of fish while minimizing potential risks.

1. Fish Gallbladder: Never Eat It

One of the most dangerous parts of a fish is the gallbladder.

The gallbladder contains bile, a digestive fluid produced by the liver. In some traditional folk remedies, certain people mistakenly believe fish gallbladders have medicinal benefits.

Medical experts strongly disagree.

Consuming fish gallbladders has been linked to:

• Acute kidney injury
• Liver damage
• Severe poisoning
• Digestive complications

Numerous cases have been reported in which individuals required hospitalization after consuming raw fish gallbladders.

Experts emphasize that fish gallbladders should never be eaten.

2. Fish Intestines and Internal Organs

Fish intestines and digestive organs may contain:

• Harmful bacteria
• Parasites
• Environmental pollutants
• Heavy metals

Because these organs process waste and food residues, they can harbor substances that are best avoided.

While proper cleaning and cooking reduce many risks, experts generally recommend removing the digestive tract before preparing fish.

This is especially important when handling wild-caught fish.

3. Fish Head and Gills (If Not Properly Cleaned)

Many cultures enjoy fish heads in soups and stews, and fish heads can contain valuable nutrients.

However, the gills deserve special attention.

Fish gills act as a filtration system and may accumulate:

• Mud
• Bacteria
• Pollutants
• Microorganisms

If fish heads are used in cooking, thorough cleaning is essential.

Improperly cleaned gills can affect both food safety and flavor.

Other Fish Safety Tips

Avoid Spoiled Fish

Never consume fish that has:

• A strong foul odor
• Slimy texture
• Discolored flesh
• Signs of spoilage

Fresh fish should have a mild smell and firm flesh.

Cook Fish Thoroughly

Proper cooking helps destroy:

• Harmful bacteria
• Parasites
• Certain pathogens

Raw or undercooked fish may increase the risk of foodborne illness.

Be Aware of Mercury Levels

Some large predatory fish may contain higher levels of mercury.

Examples include:

• Shark
• Swordfish
• King mackerel

Pregnant women and young children are often advised to choose lower-mercury seafood options.

Why Fish Remains a Healthy Choice

Despite these precautions, fish remains an excellent source of nutrition.

Regular fish consumption may support:

• Heart health
• Brain function
• Eye health
• Healthy aging
• Protein intake

The key is choosing fresh fish, preparing it properly, and avoiding potentially harmful parts.

The Bottom Line

Fish is one of the healthiest foods you can include in your diet, but knowing how to prepare it safely is important.

Experts warn that fish gallbladders, intestines, and poorly cleaned gills may pose health risks if consumed. Removing these parts and practicing proper food handling can help ensure that fish remains both safe and nutritious.

When it comes to healthy eating, how you prepare food can be just as important as what you eat.