In addition to the changes in keratin production, the nail matrix, which is the tissue under the nail that produces cells, can also be affected by aging. This can result in a slower growth rate and alterations in the nail’s shape and curvature. On average, toenails grow at a rate of approximately 1.62 mm per month, but this rate can decrease significantly with age, affecting the overall structure of the nail.

2. What Exactly Are Pincer Nails And Why They Curl Inward

Pincer nails, also known as trumpet nails, are characterized by extreme curvature of the nail plate that pinches the nail bed and surrounding skin. This can cause considerable discomfort and even pain. The exact cause of pincer nails is not fully understood, but they are believed to result from a combination of genetic predisposition, age-related changes, and external pressures.
The curvature in pincer nails can range from mild to severe, with some cases involving nails curving almost 180 degrees. This condition is more common in older adults and can be exacerbated by tight-fitting shoes or improper nail trimming techniques.

3. The Role Of Genetics In Downward-Curving Toenails