A 12-year-old student gets only a few hours of sleep each night. She continues this schedule for several weeks.

Which health effect is the girl most likely to experience from this lack of sleep?

The girl is most likely to experience physical and cognitive health effects from this lack of sleep. Some potential health effects she may experience include:

1. Fatigue and low energy levels: Lack of sleep can lead to feelings of tiredness and low energy throughout the day. This can make it difficult for the girl to concentrate, focus, and perform well in school.

2. Impaired cognitive function: Sleep deprivation can impair cognitive processes such as attention, memory, decision-making, problem-solving, and creativity. The girl may have difficulty retaining information and understanding new concepts.

3. Decreased immune function: Sustained lack of sleep can weaken the immune system and make the girl more susceptible to illness and infections. This can lead to increased sick days and reduced overall health.

4. Mood disturbances: Sleep deprivation can contribute to irritability, mood swings, increased stress levels, and difficulty regulating emotions. The girl may experience heightened anxiety, sadness, or frustration as a result of lack of sleep.

5. Growth and development issues: Sleep is important for proper growth and development in children. Chronic sleep deprivation can potentially affect the girl's physical growth and development, impairing her overall health and well-being.

It's important for individuals, especially children and adolescents, to get an adequate amount of sleep each night to support their physical, mental, and emotional health.