Which of the following is a risk factor for seizures?

• A. Regular exercise
• B. Vitamin C deficiency
• C. Sleep deprivation
• D. Cold exposure

Answer: (C)

Sleep deprivation lowers the seizure threshold, meaning it makes brain networks more excitable and prone to the abnormal synchronization that underlies seizures. In people with epilepsy or a predisposition to seizures, not getting enough sleep can precipitate an event, making sleep loss a well-established risk factor. Regular sleep helps stabilize neural activity, so maintaining consistent, adequate rest reduces this risk.

Regular exercise generally supports overall brain health and is not a known risk factor for seizures; Vitamin C deficiency is not associated with seizures in typical scenarios; cold exposure does not commonly trigger seizures.