Attention, chocolate lovers: You may not be able to help yourselves. Swiss and British scientists have linked the widespread love of chocolate to a chemical "signature" that may be programmed into our metabolic systems.
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Brittle Nails
- Overview, Causes, & Risk Factors
- Symptoms & Signs
- Diagnosis & Tests
- Prevention & Expectations
- Treatment & Monitoring
- Attribution
- View All
Overview, Causes, & Risk Factors
Brittle nails are fingernails and toenails that peel and break easily.
What is going on in the body?
Fingernails and toenails are made up of protein layers. The thickness and strength of the nails is inherited. Separation or breaking of the protein layers can occur in a person with brittle nails.
What are the causes and risks of the symptom?
The main cause of brittle nails is extreme dryness of the nail. Some individuals have a genetic predisposition to brittle nails. As people age, their nails become drier and more brittle. Dry air, common with winter's low humidity and use of indoor heat, can cause nails to dry out. Long, hot baths and showers can also make nails dry.
Diseases and conditions that can cause brittle nails include:
Factors that increase a person's risk of brittle nails include:
Repeated injury to the nail tip can also lead to brittle nails.