Your nose may reveal more about your health and appearance than you realize. Research suggests that facial attractiveness can be influenced by the position and symmetry of the nose, with one study finding that faces appeared more attractive when the nose tip was centered in relation to other facial features. Beyond appearance, researchers have also investigated whether cells collected from inside the nose could help identify gene-expression patterns associated with schizophrenia. Changes in the sense of smell may also occur in some people with Alzheimer’s disease, sometimes before noticeable memory problems develop.
The appearance of your nose can sometimes offer clues about your health, too. Persistent redness may be associated with rosacea, allergies, stress, or other medical conditions. Although alcohol consumption can contribute to facial redness in some people, a red nose alone is not evidence of alcoholism. Other symptoms and medical history are important when determining the underlying cause. Similarly, changes in your sense of smell or persistent nasal irritation may deserve medical attention rather than being dismissed as ordinary changes.

Even the color of your mucus can provide useful information. Clear mucus is generally normal, while yellow or green mucus can occur when your immune system responds to an infection. However, mucus color alone cannot determine whether an infection is bacterial or viral. Frequent or heavy nosebleeds may sometimes be associated with underlying medical problems, although most occasional nosebleeds are harmless. Ultimately, your nose can provide interesting clues about your health, but no single feature or symptom should be treated as a diagnosis.