The deep *vertical* lines in your fingernails are genetic. If you have *horizontal* ridges in your nails, you should see a doctor.
With that baloney he is really insulting your common sense.
Most ridges on the fingernails are caused by normal aging and are common. Some ridges though might be an indication of an underlying health problem especially if there is a change in color.
Loss of subcutaneous tissue and fat with age.also lower testosterone.,
In many cases, changes in the appearance of fingernails can be the first sign of an undiagnosed medical problem such as a circulatory problem, respiratory disorder, iron deficiency anemia, or thyroid disease. Such signs as ridges in the fingernails, discolorations, and changes in the contours of the nail base can be important signs of illness. With that in mind, maybe we should be scrutinizing our fingernails more often! Consult your doctor.
Having vertical (longitudinal) ridges on the fingernails refers to the presence of tiny raised lines or ridges that run up and down the length of the nail. Ridges are among the different kinds of nail abnormalities that can develop due to aging, nail injury, or underlying medical conditions.Many people notice an increase in vertical ridges of the fingernails as they age, and this can be a normal development. Aging has been described as the predominant cause of vertical ridges on the fingernails.Onychorrhexis is the medical term used to describe longitudinal ridges on the nails that often accompany brittle nails.
As far as I know they can be a sign of calcium deficiency. You can also get white lines under the nails which can be caused by this or by damage (banging, trapping fingers etc...).
My car has lots of dents in it.
either le dents or la dents
Brosse à dents
Ridges that run vertically are often caused by natural aging. In some cases, however, they can be an indication of nail injury, rheumatoid arthritis, various skin conditions, or poor nutrition. Horizontal ridges or lumps may be a sign of a serious health issue, such as a tumor or chronic illness.
penta-fingernails