1. MSG
According to researchers, it is recommended not to exceed 6g of MSG per day. Consuming too much MSG raises glutamate levels in the blood, making it difficult for the body to absorb calcium and magnesium. This can lead to headaches, forgetfulness in the short term, rapid heart rate, and nausea. Long-term excessive consumption of MSG can also have adverse effects on your reproductive system.
MSG (monosodium glutamate) enhances the taste of food, making it sweeter and more appealing, but it lacks any nutritional value and can be harmful if overused. MSG is the salt of glutamic acid, which plays a significant role in transmitting neural signals. Excessive consumption of MSG can disrupt brain activity, lead to memory loss, deplete Vitamin B6, and potentially trigger seizures. It is classified as an excitotoxin, a chemical that can damage the brain and central nervous system. Excitotoxins tend to affect the hypothalamus in the brain, which controls vital body functions like growth, sleep patterns, puberty, and even appetite.
Overconsumption of MSG can cause symptoms like a burning sensation in the back of the neck, dizziness, headaches, dry throat, phlegm, and discomfort. Asthma attacks may occur about 12 hours after ingesting MSG. Many people report various symptoms such as stress, dizziness, headaches, nausea, abdominal pain, fatigue, and unusual heat in the neck after 30 minutes of consuming excessive MSG. Additionally, those with sensitive constitutions, headaches, facial redness, neck pain, vomiting, asthma, high blood pressure, kidney or heart problems, and children should avoid MSG, as it can cause serious negative health effects.
For children, consuming MSG alters their taste preferences and may lead to MSG addiction, meaning they will refuse food without it, unknowingly harming their brains. Excessive MSG intake in children increases the levels of aminobutyric acid in the brain, which inhibits the release of hormones like thyrotropin and parathyroid hormone. This can lead to cardiovascular problems and a higher risk of cancer. MSG can also contribute to heart disease and increase the likelihood of cancer.


2. Popcorn
Popcorn is a beloved snack among young people. However, did you know that eating too much of it could lead to lead poisoning? Popcorn contains up to 10mg of lead per 500g, which can negatively affect the nervous system, particularly the digestive system in both adults and children. Be careful when choosing snacks for your loved ones.
A study conducted by the National Institute of Environmental Health Sciences found that the main chemical components in popcorn, including the butter flavoring, can trigger symptoms like coughing and shortness of breath. This is especially true for those with a history of or those currently suffering from neurological conditions. Scientists suggest that these signs indicate that the chemicals in popcorn are damaging brain cells over time.
According to the same study, diacetyl, a common butter flavoring, along with vegetable oils and fast food, can affect brain proteins, preventing their proper breakdown and potentially leading to Alzheimer’s disease, a common form of dementia in older adults. Moreover, diacetyl can infiltrate and destroy the brain's protective barrier while inhibiting the activity of glyoxalase (a protein that protects nerve cells). Over time, cognitive and neurological functions may severely deteriorate, especially for those with sensitive constitutions!
There are also concerns that popcorn could contribute to cancer due to the presence of a substance called flour in the non-stick packaging. Scientists have found that when the popcorn is heated, this plastic coating breaks down, releasing perfluorooctanoic acid, which is harmful to human health. This acid is also known to be one of the primary causes of lung cancer.


3. Pig Liver
It is estimated that 1kg of pig liver contains up to 800mg of cholesterol. Cholesterol is a leading cause of atherosclerosis, impaired brain function, and high blood pressure. Therefore, it's important not to consume too much pig liver. Liver is an essential organ and a common food in many cultures. Pig, cow, sheep, and chicken livers are among the most popular. It is often cooked similarly to other meats and can be eaten in its natural form, mixed with onions, or combined with other meats. Liver is a key ingredient in many famous dishes, such as liver pate.
However, since the liver is responsible for detoxifying the body, it is also where many toxins accumulate. This is especially true for the livers of pigs that are unhealthy, suffering from hepatitis, or even cancer, which may contain harmful toxins and viruses. Furthermore, the liver is a host for various parasites, such as liver flukes. If not carefully prepared, these parasites can enter the human body and cause serious health issues.
Additionally, liver has a high cholesterol content. When consuming liver, the body produces less cholesterol to maintain a balance in blood cholesterol levels, which can increase the risk of cardiovascular problems. Therefore, it's best not to overconsume internal organs, especially liver. Adults should limit liver consumption to 2-3 times a week (around 50-70g per serving), while children should have it 2 times a week (about 30-50g per serving).


4. Pickled Vegetables
Almost every household enjoys a dish of pickled vegetables as a refreshing side to balance the richness of daily meals. However, regularly consuming pickled vegetables may lead to water and sodium retention in the body, increasing the risk of cardiovascular diseases. Additionally, pickled vegetables contain nitrites, which are known carcinogens. Long-term consumption of pickled vegetables can potentially lead to cancer.
Experts explain that during the pickling process, nitrates in the vegetables react with bacteria in the environment, converting into nitrites through oxidation. When consumed, the acid in the stomach further activates the nitrites, which can then react with amino acids in foods like meat, fish, and shrimp to form nitrosamines – compounds that have been linked to cancer. The sour taste of pickled vegetables is also harmful to the stomach. Eating too much, especially on an empty stomach, can lead to gastric ulcers. Furthermore, the high salt content in pickled vegetables can strain the kidneys, heart, and increase blood pressure.
Studies have shown that extremely salty foods significantly increase the risk of stomach cancer. In countries like Turkey and Japan, where pickled foods are widely consumed, higher rates of stomach cancer have been observed. A recent study in Turkey found that stomach cancer patients ate significantly less bread, cereals, milk, and orange juice, but consumed more pickled vegetables than those without cancer. More research is needed to fully understand this connection.
Pregnant women should also avoid pickled vegetables, as they may affect uterine activity, posing risks to the unborn child.


5. Coffee
The main component of coffee is caffeine. After consumption, caffeine enters the bloodstream and starts affecting various organs within 5 minutes. It stimulates the blood vessels and increases the acidity in urine, which can negatively impact your health.
Excessive coffee consumption can lead to a condition called rhabdomyolysis, which is muscle tissue breakdown. This serious health disorder causes damaged muscle fibers to enter the bloodstream and can lead to kidney failure. To reduce the risk of this condition, limit your coffee intake to approximately 250mg of caffeine per day.
According to recent reports, coffee is often prepared with a variety of toxic chemicals to extract coffee oil. When combined with regular coffee, these oils can produce harmful substances. Although they don't cause immediate poisoning, long-term consumption can result in allergic reactions, itching, and accumulation of heavy metals such as lead, cadmium, and mercury in the body.
These toxins can accumulate in the liver and kidneys, leading to organ failure. They can also accumulate in the brain, causing memory loss, headaches, and confusion. Additionally, these substances can gather in the reproductive organs, causing birth defects, infertility, and premature birth. Unfortunately, many coffee vendors today use additives such as soybeans and corn, which, when burned, create carcinogenic compounds like acrylamide. The presence of caffeine along with these harmful substances makes excessive coffee consumption extremely dangerous.


6. Dried Fish
Eating dried fish can stimulate excessive saliva production in the mouth. This saliva, mixed with food, then travels down to the stomach, diluting the stomach acid. This reduces your ability to digest food effectively. While traditionally prepared dried fish is not harmful, buying fish from unknown sources, especially if preservatives are used, can be detrimental to your health. The damage caused by these chemicals might not be immediately apparent, but over 5 to 10 years, it could lead to serious health issues. In essence, dried fish and seafood are not inherently carcinogenic, but the methods of processing and chemicals used for preservation can be hazardous.
To minimize the risks, it’s crucial to choose, prepare, and store food in a safe and scientific manner to protect your health. Many people worry about the potential cancer risks of dried fish, and these concerns are not unfounded, especially when the cleanliness of the food is uncertain. The best approach is to educate yourself on how to distinguish clean from contaminated food, buy from reputable suppliers, and, if possible, grow your own food using organic methods to ensure it is safe.


7. Fried Dough
Fried dough contains inorganic aluminum compounds. If consumed excessively and regularly, the aluminum levels in your body will increase and become difficult to eliminate. The accumulation of too much aluminum can lead to nerve and brain cell toxicity, causing neurological diseases like memory loss. In some cases, it may even result in Alzheimer’s disease as one ages.
Fried dough is a popular snack due to its crispy texture and delightful taste. However, it contains aluminum salts, which, when consumed frequently, can negatively affect kidney function and potentially lead to kidney failure. On average, people ingest 10-80 mg of aluminum daily from food, most of which is excreted through stool, but a small amount accumulates in the testes, kidneys, muscles, thyroid, bones, and brain. While aluminum is a trace element necessary for the body, it was previously thought to have little impact on health. The dough made with baking soda often has bright colors and a hollow center.
In particular, the alum used in fried dough contains inorganic aluminum. Regular consumption of fried dough makes it difficult for the body to eliminate aluminum through the kidneys. Excessive accumulation can have a significant impact on the brain and nerve cells, leading to confusion and memory loss. Fried dough contains toxic substances that can cause brain atrophy, memory loss, and even cancer, raising concerns among consumers. Fried dough is made with ammonium aluminum sulfate anhydrous, a chemical used in dyeing and copper plating. Alum, the main component, if used as a food additive, accumulates in the body without being excreted. Over time, it can result in neurological diseases, such as Alzheimer’s, due to the buildup of aluminum in the body.


8. Processed Meats
When you think of the term 'processed meats', you might picture tempting foods like bacon, beef jerky, sausages, salami, or canned meats. However, behind the irresistible flavors of these foods lies a hidden health risk. According to scientists, these meats are often preserved with salt and chemicals to extend their shelf life.
Research has shown that consuming just 50 grams of processed meats daily can increase the risk of colorectal cancer by up to 18%. In addition to raising the risk of digestive cancers such as stomach and colorectal cancer, processed meats also pose a 'silent' threat to heart health by increasing blood sugar, raising levels of bad cholesterol, and elevating blood pressure. Therefore, it's important to limit the consumption of these foods as much as possible to protect your health.


9. Grilled Foods or Foods Cooked at High Temperatures
Grilled meats, fish, or seafood with their enticing aroma and rich flavor are favorites for many. However, they also pose a serious health risk, including an increased likelihood of cancer.
Experts explain that cooking food at high temperatures, such as grilling, can create compounds that may alter your DNA and increase the risk of cancer. Consuming large amounts of these foods may contribute to certain cancers like prostate, colorectal, and pancreatic cancer.
Additionally, if the food is not fully cooked, it can cause digestive problems, especially diarrhea, which could seriously affect your health.


10. Fruits and Vegetables Contaminated with Chemicals
Don’t assume that all fruits and vegetables are beneficial for your health and your family’s well-being. In today’s market, there are certain fruits and vegetables that have been heavily treated with harmful pesticides, growth hormones, and preservatives.
Most of these chemicals are classified as toxic substances, and their use in agriculture is banned due to their detrimental effects on human health, including an increased risk of cancer.
To ensure the safety of your health and that of your family, it's essential to choose fruits and vegetables with clear origins and certifications, preferably organic products. This way, you can avoid exposure to harmful chemicals.
Before consuming or preparing these fruits and vegetables, it's advisable to soak them in saltwater or use specialized washing machines to remove dirt, pesticide residues, and harmful chemicals.


11. Sunflower Seeds
In Vietnam, most of the sunflower seeds consumed come from China. These seeds are often found to contain talc powder and aluminum, which can lead to brain shrinkage. Numerous studies have shown that excessive consumption of sunflower seeds could potentially cause cancer. The unsaturated fatty acids in sunflower seeds can also disrupt digestion by increasing the body's absorption of choline, which may lead to fatty liver, cirrhosis, hepatitis, or even liver cancer.
They also pose a threat to kidney function, damage tooth enamel, and are linked to symptoms like acid reflux and heartburn. During their growth, sunflower seeds absorb various trace elements from the soil, including cadmium, which is harmful to health when present in high amounts.
Regularly snacking on sunflower seeds can disrupt the functioning of the nervous system and kidneys, with cadmium being the main culprit. Additionally, sunflower seeds are notorious for damaging tooth enamel, leading to tartar buildup. Dentists recommend regular dental cleanings to prevent gum disease and other oral health issues.


12. Century Eggs
If you're familiar with or frequently consume century eggs, be cautious. These eggs contain a certain amount of lead, and regular consumption increases the risk of lead poisoning. Symptoms of lead poisoning include insomnia, dizziness due to anemia, mental fatigue, and a rapid decline in IQ.
Century eggs (also known as hundred-year eggs or preserved eggs) are a Chinese delicacy. In Vietnam, they are made from duck eggs, which are preserved in a mixture of clay, ash, salt, lime, and rice husks for weeks or even months. In China, quail and chicken eggs are also used for this dish. Once the outer layers of clay and materials are removed, the eggshells appear speckled, resembling black and white pepper. The yolk is typically grayish-green or dark green, with a strong, distinctive aroma, while the egg white is translucent and dark brown, resembling jelly.
The preservation process involves soaking the eggs in an alkaline mixture made of clay, wood ash, lime, and salt to prolong the aging process. However, if you're not careful, consuming these eggs can lead to unexpected health problems. To stay healthy, it's best to choose food that is free from harmful substances like lead and aluminum to protect your health and safeguard your brain.


13. Chewing Gum
Chewing gum is made from natural rubber, so it's not inherently toxic. However, during its production, whitening agents are added, which can introduce certain toxic substances. The food additives and antioxidants used in gum can also have harmful effects on health.
If you tend to chew more on one side, this could lead to jaw imbalances or temporomandibular joint (TMJ) disorder, causing chronic pain. Many people experience jaw, neck, and head pain, which can result in headaches, earaches, and toothaches over time.
Frequent chewing of gum can also damage tooth enamel and alter the alignment of the jaw. Some gums contain aspartame, an artificial sweetener that, when metabolized, can release formaldehyde, a known carcinogen.
For young children, swallowing gum is a real risk. The gum's gum base cannot be digested and remains in the stomach, potentially causing a blockage in the intestines, which can be life-threatening.


