The fingernails in palmistry can depict the health as well as the character. The nails act primarily as protection of the sensitive fingertip. They have a delicate growth process, and so the nails are responsive to physiological and physical changes.
See the article here about different nail colour and what they mean.
The cuticle around the edge is a defence, preventing grime and infection from entering beneath the nail. The nail bed, with its rich blood supply, gives the nail its colour and reveals potential irregularities.
The moons are a part of the growing root of the nail, more commonly seen on the thumbs and rarely on the little finger. Ideally, they should be just slightly visible and pale in colour. No moons at all may suggest a weak constitution, and over-large moons can denote an overactive thyroid.
To check for health issues from the fingernails in palmistry, we look at the colour of the nail. We also look at the nail bed, the texture, shape and the moons. These findings represent current or past events, not the future. In some cases, it is problematic to make a judgement due to the popularity of artificial nails. Frequent use of nail varnish and associated products on the nails can also give misleading information for the health of the individual.
I would like to point out that, to back up any possible health issues acquired from palmistry, you should always consult a qualified medical practitioner. Please don’t make the mistake of diagnosing from the nails, palms or lines alone, because many of these indicators are in continual change according to the individuals’.