In addition to detecting 1 trillion different odors, the nose is also a mirror of human health and can reflect a variety of health problems. The American "Medical Daily" published an article that published 6 health secrets that the nose can reveal that have been confirmed by scientific research.

1. The intranasal mucosa reflects sinusitis and nasal allergies. Normal nasal mucosa should be pink. If your nasal mucosa appears blue, white, or swollen, you may have allergic rhinitis or a type of nasal allergy that causes inflammation. Redness in the nose usually indicates an infection. If it's accompanied by fever or nasal sensitivity, a bacterial sinus infection may occur.

2. Bacteria in the nose reflect obesity. A new study published in the American Journal of Human Biology from the University of Wroclaw in Poland found a certain correlation between nasal and throat flora and body mass index (BMI). The heavier the male participants were, the greater the number of potentially pathogenic bacteria in their nasal cavities. Men who were slimmer and more attractive had fewer nasal bacteria. Therefore, the number of bacteria in the nasal cavity is closely related to whether the body is obese.

3. The shape of the nose may determine "mate potential." A new study published on the website of the American "Discover" magazine on April 30 found that a straight and attractive nose is a sign of good health. Therefore, liking a straight nose bridge is not only a manifestation of people's love for beauty, but also the result of "natural selection." New research finds that when a person's nose is straightened and centered after plastic surgery, their facial attractiveness increases significantly.

4. Looking at the nose can diagnose schizophrenia. A new study published in the American Journal of Neurobiology of Disease found that the nose can help diagnose schizophrenia. Genetic analysis of neuronal samples from patients' noses could help diagnose schizophrenia. In addition, the nose can help diagnose brain diseases such as Alzheimer's disease. Many patients with this disease suffer from loss of smell before the onset of the disease.

5. Rosacea is related to many diseases. Dr. Ni Maoxin, a traditional Chinese medicine expert in Los Angeles, USA, said that in addition to drinking too much alcohol, a red nose (rosacea) may also be related to a variety of diseases, such as stress or anxiety, allergies, hay fever or thyroid disease.

6. The color of nasal mucus is a sign of health. The nasal mucus of healthy people is clear, but once the body is seriously ill, white blood cells secrete a green enzyme that causes the nasal mucus to appear yellow or green. Nosebleeds may be related to a bleeding disorder or high blood pressure. However, in most cases, nosebleeds are normal and harmless, and there is nothing to worry about.