Lack of sleep began to tell on me.
Lack of sleep was undermining her health.
What with overwork and what with little sleep at night, he fell ill.
Expensive meals can't compensate for lack of sleep.
If you have a cold, lack of sleep is very bad for you.
She had a headache from lack of sleep.
Sleep deprivation increases risk of heart attacks.
I haven't had enough sleep because I sat up all night.
He tried to make up for his lack of sleep by taking a nap.
What with overwork and lack of sleep, she has lost her health.