This kind of egg should not be eaten. It's not too late to find out now!

Although unassuming in appearance, eggs are one of the cheapest, most readily available, and most versatile foods in the world, and also one of the oldest. Eggs are nutritious and can be used to make many delicious dishes, but some eggs can be detrimental to your health. Let's take a look.

I. The Effects and Benefits of Eggs

1. Brain-boosting

Eggs play a significant role in the development of the nervous system and the body. The choline in them can improve memory in all age groups.

2. Liver Protection

The protein in eggs can repair liver tissue damage, and the lecithin in the yolk can promote the regeneration of liver cells. It can also increase the body's plasma protein levels, enhancing metabolic and immune functions.

Scrambled Eggs with Tomatoes

3. Preventing and Treating Arteriosclerosis

American nutritionists and medical workers used eggs to prevent and treat atherosclerosis with unexpectedly amazing results. They extracted lecithin from eggs, walnuts, and pork liver and gave it to patients with cardiovascular diseases at a dose of 4 to 6 tablespoons daily. After 3 months, the patients' serum cholesterol levels dropped significantly, achieving satisfactory results.

4. Cancer Prevention

According to an analysis of global cancer mortality rates, it has been found that the mortality rate from cancer is inversely proportional to the intake of selenium. Eggs are rich in selenium.

5. Anti-aging

One of the secrets to longevity for many elderly people is eating an egg every day.

6. Beauty and Skin Care

Eggs also contain a relatively high amount of iron. Iron plays a role in the body's blood production and the transport of oxygen and nutrients in the blood. The rosy glow of a person's complexion is inseparable from iron. A lack of iron can lead to iron-deficiency anemia, causing a sallow complexion and a loss of the skin's healthy glow.由此可见，鸡蛋确是维护皮肤美的重要食品之一。

Egg-filled Pancake

II. These Eggs Should Not Be Eaten

1. Cracked Eggs

During transportation, storage, and packaging, eggs can be cracked or develop fractures due to vibration, squeezing, and other reasons. These cracks make it easy for bacteria to invade, and the eggs should not be eaten if they have been stored for a long time.

2. Rotten Eggs

When bacteria invade the egg and multiply in large numbers, the egg spoils. The eggshell may turn a dark gray, and the internal gas from the bacteria (hydrogen sulfide) may even cause the shell to expand and burst. The egg's contents will be gray-green or dark yellow and have a foul odor. Such eggs must not be eaten, as they can cause bacterial food poisoning.

3. Dead-in-Shell Eggs

During the incubation process, an egg may stop developing due to bacterial or parasitic contamination, or unfavorable temperature and humidity conditions. These are called dead-in-shell eggs. The nutritional content of these eggs has changed. If the death occurred some time ago, the protein will have broken down into various toxic substances, so they should not be eaten.

Scrambled Eggs with Onions and Cucumbers

4. Broken-Yolk Eggs

The yolk membrane can rupture due to violent shaking during transportation, causing mechanical yolk breakage. Alternatively, if stored for too long, bacteria or mold can enter the egg through the pores in the shell, destroying the protein structure and causing the yolk to break, resulting in thin, cloudy egg white.

If the yolk is only slightly broken and there is no odor, it can still be eaten after being cooked at high temperatures, such as frying. However, if bacteria have multiplied inside the egg and the protein has become denatured with a foul smell, it cannot be eaten.

5. Moldy Eggs

If eggs are rained on or become damp, the protective film on the surface of the shell can be washed away, allowing bacteria to enter and causing the egg to spoil and become moldy. This results in black spots and mold on the shell, and such eggs should not be purchased or eaten. In addition, eggs like "泻黄蛋" (yellow diarrhea eggs) and "血筋蛋" (blood streak eggs) should generally not be purchased or eaten either.

Scrambled Eggs with Green Peppers

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Such eggs are like a "time bomb," would you still dare to eat them?