Nails can grow faster than average for several normal reasons, and in most cases this is not a sign of a health problem. Nail growth varies from person to person and is influenced by age, genetics, and how active the nail matrix is. Some people naturally produce new nail cells more quickly, which makes their nails seem to “grow overnight.”
Good blood flow to the fingers also plays a role. When circulation is strong, more oxygen and nutrients reach the nail root, supporting faster growth. This is why fingernails usually grow faster than toenails, and why nails on the dominant hand may appear to grow slightly quicker.
Growth speed can also change over time. Nails tend to grow faster in younger adults and may slow with aging. Illness, major stress on the body, or certain systemic conditions can temporarily change how fast nails grow, either speeding them up or slowing them down.
If fast-growing nails are healthy, smooth, and strong, no treatment is needed. Avoid using supplements or medications to alter nail growth without guidance. If nail growth is paired with changes in color, thickness, pain, or shape, a dermatologist is the right specialist to evaluate it.