Nails can provide some evidence of a person's underlying health status. If you notice sudden changes in your nails, it can be a good idea to bring this up with your primary care physician. He or she can examine your nails in the context of a more general history and physical exam.Changes in nail texture can be associated with many different things.ow levels of Vitamin C, folic acid, and certain proteins in the diet are also known to cause nail splitting. Changes in nail shape can also give some information about underlying health. Nails that grow in a spoon shape can be associated with a deficiency of either iron or vitamin B12.
Lair definition, a den or resting place of a wild animal: The cougar retired to its lair. See more.
A cave is a hollow place in the ground,[1][2] specifically a natural underground space large enough for a human to enter. Caves form naturally by the weathering of rock and often extend deep underground. The word cave can also refer to much smaller openings such as sea caves, rock shelters, and grottos, though strictly speaking a cave is exogene, meaning it is deeper than its opening is wide, and a rock shelter is endogene. A cavern is a specific type of cave, naturally formed in soluble rock with the ability to grow speleothems. Speleology is the science of exploration and study of all aspects of caves and the cave environment. Visiting or exploring caves for recreation may be called caving, potholing, or spelunking.