Millions of people are being urged to check their fingers and toes for subtle changes that could indicate high cholesterol, a condition the NHS describes as a 'silent killer' because it often shows no symptoms until serious harm has occurred.
One early warning sign can be spotted in your nails. Healthy nails are smooth, pink, and free of ridges or dents. A change in colour to pale white, yellow, or blue may suggest reduced circulation due to cholesterol blockages. Slower nail growth, unusually thick or brittle nails, and dark lines under the nails (splinter haemorrhages) are also potential red flags.
High cholesterol typically has no obvious symptoms and can only be diagnosed through a blood test. It increases the risk of heart attacks and strokes. Risk factors include unhealthy diet, smoking, excess weight, age, and family history.
The NHS advises those with high cholesterol to reduce saturated fat intake and replace it with unsaturated fats. Regular exercise—at least 150 minutes per week, such as walking, swimming, or cycling—is also recommended. In some cases, doctors may prescribe statins.
If you are concerned about your cholesterol levels, consult a GP for a blood test and appropriate treatment.
