What causes vertical lines on nails

　　Tiny nails are actually a "barometer" of health. When many people find vertical lines on their nails, their first reaction is “Are they old? ”In fact, this may be a distress signal sent by the body. While some vertical lines are normal, in some cases they may be related to nutritional deficiencies, chronic diseases, or even internal problems. Stop ignoring this detail and understand the reasons behind it so you can intervene in time.

What causes vertical lines on nails

　　1. Malnutrition

　　Nails are made of keratin, and their health depends on vitamin A, B vitamins (especially B7 biotin), iron, zinc and protein. Long-term unbalanced diet, dieting or malabsorption may cause nails to become thin, easy to break, and have obvious vertical lines. For example, iron deficiency anemia is often accompanied by brittle nails and longitudinal ridges.

　　2. Chronic disease signals

　　Liver problems: Abnormal liver function will affect the metabolism of toxins in the body. Some patients will have dark vertical lines or "Lindsay's nails" on their nails, suggesting the need to check liver function.

　　Psoriasis or onychomycosis: Skin diseases such as psoriasis can affect the nails and appear as pitting, thickening, vertical lines or separations； Onychomycosis (onychomycosis) is mostly caused by fungal infection. The nails become yellow and thick, and may also be accompanied by longitudinal texture changes.

　　Cardiovascular disease: Studies have found that severe cardiovascular problems may affect peripheral blood circulation, leading to insufficient nutrient supply in nails and abnormal lines.

　　3. Trauma or overuse

　　Long-term housework, frequent manicures, pressure or friction on the nails may damage the nail matrix (nail growth area), leading to local growth disorders and the formation of temporary vertical lines.

　　4. Excessive fatigue and stress

　　Staying up late for a long time, being mentally stressed, and physically exhausted will affect endocrine and metabolism, which will indirectly affect the nail growth cycle and cause temporary vertical lines. This can usually be alleviated by adjusting your work and rest schedule.

Vertical nail lines suggestive of medical treatment

　　1. Vertical lines change rapidly in a short period of time

　　If the vertical nail lines suddenly widen or deepen within 1-2 months, or the color changes from light to black or brown, and the borders are irregular, you need to seek medical treatment in time. This abnormal change may be related to onychomycosis, melanoma, etc. Early detection can rule out the risk of serious diseases and avoid delays in treatment.

　　2. Vertical lines are accompanied by other abnormal symptoms

　　When the vertical nail lines appear along with thickening, brittleness, and delamination of the nail, or bleeding and pain under the nail, or even separation of the nail plate from the nail bed, you need to seek medical examination. These symptoms may indicate fungal infection, nail dystrophy or other diseases. Professional diagnosis can clarify the cause and provide targeted treatment.

　　3. Special groups of people have vertical nail lines.

　　Patients with diabetes, anemia, liver and kidney disease, or those taking medications for a long time are advised to seek medical treatment if vertical nail lines appear new and persist. This group of people have special body functions. Vertical lines may be a sign of aggravation of underlying diseases or side effects of drugs, and their health status needs to be evaluated through examination.

Daily care tips for vertical nail lines

　　1. Balanced diet and nutritional supplements

　　Eat more foods rich in protein (such as eggs, lean meat, soy products), vitamin A (such as carrots, spinach), calcium, iron and zinc (such as milk, nuts, shellfish) every day to provide sufficient nutrients for nail growth, improve vertical nail lines caused by nutritional deficiencies, and make nails stronger.

　　2. Do daily nail care

　　Avoid frequently polishing your nails or applying irritating nail polish, and do not trim your nails too short to prevent damage to the nail bed.； Wear gloves when doing housework or coming into contact with chemicals to reduce nail wear and corrosion, keep the nail surface smooth, and reduce the possibility of aggravating vertical lines.

　　3. Adjust living habits

　　Ensure regular work and rest, avoid staying up late for long periods of time, allow the body’s metabolism to normalize, and help nails grow healthily； Reduce frequent manicures and give your nails time to "breathe". At the same time, pay attention to hand hygiene to avoid nail infection. Take care of your nails from the details of your life and improve the vertical lines.

　　Vertical nail lines are not necessarily a big problem, but they cannot be classified as "aging." Learning to observe changes, taking into account one's own condition, and conducting timely physical examinations when necessary is the true wisdom of health care.