What aspect primarily influences nail growth?

Genetic factors primarily influence nail growth because the rate at which nails grow, their thickness, and overall health are largely determined by a person's genetic makeup. Different individuals have varying genetic traits that can affect everything from nail color to growth rate. For instance, some people may naturally have faster-growing nails, while others might have nails that grow more slowly. This hereditary aspect plays a crucial role in shaping how nails develop over time.

While dietary supplements can contribute to the overall health of nails by providing necessary nutrients, their influence on the actual growth rate is secondary to genetic predisposition. Similarly, environmental conditions, such as humidity and temperature, can affect nail health and may impact the appearance of nails, but they don't fundamentally alter the growth process itself. The frequency of manicures may improve nail aesthetics and may keep the nails looking healthy, but it does not directly influence the biological growth rate of the nails. Therefore, genetic factors remain the primary influence on nail growth.