On 29/7, the China Consumers Association released a report analyzing unusual fingernail symptoms and their potential underlying health issues. Nail color and shape are highlighted as important indicators, potentially foreshadowing serious medical problems, including chronic kidney disease.
According to the report, discolored, dented, or peeling nails can be linked to malnutrition, anemia, fungal infections, liver disease, cardiovascular issues, or kidney problems. Darkened nails are a distinguishing sign of chronic kidney disease, especially when accompanied by increased melanin at the nail bed, uneven skin tone, or mild twitching.
Numerous international studies have documented the specific link between nail discoloration and chronic kidney disease. "Half-and-half nails," also known as "Lindsay's nails," often appear in 15-50% of kidney disease patients. This condition presents as two distinct colors: pale white near the base and reddish-brown at the tip. Other signs like Beau's lines (horizontal ridges), pale nails, brittle nails, and spoon-shaped nails also commonly appear in over 70% of individuals with end-stage renal disease or those undergoing dialysis.
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Fingernails can indicate several health problems. Photo: Unsplash |
Fingernails can indicate several health problems. Photo: Unsplash
Many experts warn that fingernails are among the earliest indicators of metabolic disorders, toxins, malnutrition, or anemia caused by kidney failure. DaVita Kidney Care in the US states that changes in nail thickness, brittleness, surface, and color are common ways to detect chronic kidney disease.
In the UK, the Daily Mail reported a case of a woman diagnosed with severe kidney disease after a nail technician noticed unusual discoloration in her toenails.
However, accurate diagnosis requires medical examination and additional testing. In some cases, these signs might simply indicate nutritional deficiencies, and dietary changes can help restore nail health.
The report recommends foods rich in vitamin B12 and vitamin D, such as animal liver, fish high in omega-3 fatty acids, egg yolks, and fortified dairy products to improve skin pigmentation and nail color. For chronic kidney disease, in addition to a proper diet, patients should adhere to their doctor's instructions and undergo regular check-ups.
The report also mentions other nail signs: pale nails linked to anemia or cirrhosis; red nails suggesting vitamin C deficiency or scurvy risk; spoon-shaped nails indicating fungal infection or hyperthyroidism; and clubbed fingers potentially related to respiratory or cardiovascular issues.
Thuc Linh (HK01)
