I am a word of 5 letters! People eat me! If u remove my 1st letter I will b a form of energy! If u remove my 1st 2 letters I will be needed 4 liiving. [...]

Can you guess which of the following are true and which are false?

Apples, not caffeine, are more efficient at waking you up in the morning.
Alfred Hitchcock didn’t have a belly button.
A pack-a-day smoker will lose approximately 2 teeth every 10 years.
People do not get sick from cold weather; it’s from being indoors a lot more.
When [...]