1. Eye Damage
Medical experts have warned that long-term consumption of garlic can lead to eye damage. Garlic contains compounds that irritate the mucous membranes and conjunctival tissues of the eyes, which can be harmful, especially for individuals with pre-existing eye conditions or weak eyesight. Therefore, it is recommended that people suffering from eye diseases, experiencing dizziness, or having vision problems should limit their intake of garlic or stop using it altogether.
It is essential to consume garlic in the right amounts and seek advice from nutrition specialists to reap its full benefits, rather than relying on instinct or guesswork.


2. Digestive System Irritation
Allicin, a compound found in garlic, is often praised for its natural antibiotic properties, helping to fight harmful bacteria. However, individuals with sensitive digestive systems should be cautious when consuming garlic, as allicin can irritate and erode the intestinal lining. This may lead to symptoms like congestion, swelling, and disrupted digestion, which could result in diarrhea or other unwanted complications.
Those with delicate or frequently troubled digestive systems should carefully consider the use of garlic before adding it to their diet.


3. Stomach Ulcers
Consuming garlic on an empty stomach or eating it without other foods can easily lead to stomach ulcers. The allicin in garlic, which is known for its antibiotic properties, can trigger a strong reaction in the stomach, leading to internal heat and irritation.
Therefore, it is advised to consume garlic when necessary and to pair it with other foods to maintain a balanced diet and protect the stomach. For individuals with existing stomach issues, it is important to carefully regulate garlic intake to maximize its benefits while minimizing risks.


4. Headaches
Consuming too much raw garlic can trigger migraines. Garlic may stimulate the trigeminal nerve, causing the release of neuropeptides that lead to headaches, discomfort, and a throbbing sensation.
It is recommended to consume garlic that has been properly prepared to suit your nutritional needs, ensuring a balanced intake without causing adverse effects, especially on the head.


5. Harmful Effects for Pregnant Women
In dishes like fried pork, stir-fried water spinach with garlic, garlic butter bread, garlic shrimp, or grilled chicken wings with garlic butter, garlic adds a fragrant and delicious flavor to the food. For healthy individuals, consuming garlic offers various health benefits, such as boosting immunity and providing essential nutrients. However, pregnant women should be cautious when consuming garlic.
Excessive consumption of garlic during pregnancy can have adverse effects, as it may increase blood thinning, which can pose serious risks. Pregnant or breastfeeding women should avoid consuming large amounts of garlic, as it may trigger early labor.


6. Risk of Poisoning
This is arguably the most dangerous side effect of consuming garlic incorrectly. Garlic poisoning can result in painful stomach cramps and, if left untreated, could even lead to death.
Many people unknowingly increase the risk of poisoning by storing garlic in oil for long periods, keeping it in the fridge for too long, or using sprouted garlic in food. For example, combining garlic with eggs can create a toxic substance harmful to the body. When garlic is overcooked or burnt, it produces harmful compounds, so it’s best not to eat garlic with eggs. Additionally, garlic should not be paired with certain foods like carp, as it may cause bloating and increase the risk of parasites. Always use garlic properly to avoid health complications.


7. Interaction with Prescription Medications
Garlic may interact with certain prescription medications, especially blood thinners commonly prescribed after minor surgeries or major operations. Moreover, medical experts have pointed out that combining garlic with HIV/AIDS medications could result in dangerous reactions. Particularly, people taking medication for liver conditions should avoid garlic, as its warming, spicy properties can stimulate the liver too much, worsening liver conditions and potentially leading to long-term damage.
Therefore, if you are on any medication, it is important to consult with your doctor about whether or not consuming garlic is safe for you. Never self-prescribe or make assumptions, as this could lead to harmful consequences.


8. Allergies
Although garlic is a natural product, not everyone can tolerate it. Some people may have allergic reactions to the compounds found in garlic. Mild symptoms include bloating, rashes, and a warm sensation, while more severe reactions could lead to difficulty breathing or even be life-threatening. If you experience symptoms like heartburn or bloating after consuming garlic, you might be allergic to it. Additionally, the compounds released when crushing garlic can cause skin irritation, leading to redness, burning, or rashes, especially for people with sensitive skin.
If you notice symptoms like heartburn or bloating after consuming garlic, it’s best to stop eating it and consult a dermatologist for proper care and treatment.


