As explained for Spoon nails and jobs, spoon nails occur due to either internal or local defeciency of iron. Furthermore, strong acids and alkali also induce some symptoms.
It’s actually really common for women to have spoon nails. Main reasons include,
1) Iron deficiency due to menstruation
Due to menstruation, women lose a large of portion of blood every month. In this blood is haemoglobin which contains iron, causing women to have a consistent drop in iron levels of the body
2) Iron deficiency due to diet
We mainly gain our iron from the food that we eat, therefore individuals who undergo a diet to lose weight are reducing their iron intake.
As explained in 1 and 2, women are under consistent risk of lacking iron. Iron deficiency causes anaemia which may result in spoon nails.
To avoid this, it is important to pay attention to iron intake. Such as by eating iron rich food or taking iron supplements.
However, it is difficult to judge how much iron intake is healthy. For such cases, it’s recommended to visit a medical professional for advice.
