Final answer:
Sleep deficiency can cause hormone imbalance, allergies, and increase the risk of certain types of cancer.
Step-by-step explanation:
Sleep deficiency can cause hormone imbalance as it disrupts the normal production of hormones like cortisol, growth hormone, and testosterone. Lack of sleep can also weaken the immune system, leading to increased susceptibility to allergies. While cancer can have many causes, inadequate sleep has been linked to an increased risk of certain types of cancer such as breast cancer and colorectal cancer.
Learn more about health issues caused by sleep deficiency