Nails

To prevent streaks on the nails, adopt a balanced diet rich in vitamins and minerals, regularly hydrate the nails and avoid trauma or excessive use of chemical products.

It takes four to six months for a fingernail to fully regrow from its base, and up to twelve months for a toenail.

Visible signs of deficiencies on the nails include vertical ridges, often linked to an iron deficiency, brittle or soft nails due to a biotin deficiency, white spots associated with a zinc deficiency, and a pale or yellowish hue indicating a lack of iron or vitamin B.

The primary causes of nail deformation are fungal infection, trauma, certain diseases, or even genetic factors.

No, nails are composed of dead matter and do not breathe in the literal sense of the term. There is no gaseous exchange between them and the external environment.

Although some people claim that nails grow faster in the summer, this phenomenon has not yet been documented in scientific literature to date.