Final answer:
Sleep deficiency can cause obesity, cancer, and lung disease.
Step-by-step explanation:
Sleep deficiency can lead to several health issues, including obesity. Lack of sleep affects two hormones that regulate appetite, ghrelin and leptin, causing an increase in hunger and food cravings. This can contribute to weight gain and obesity. Additionally, sleep deficiency is also linked to an increased risk of cancer and lung disease. Chronic sleep deprivation can weaken the immune system, making the body more vulnerable to infections and diseases, including certain types of cancer and lung diseases.
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