Life is a continuous battle against illness and death.
Old age is another marauder which never stops its relentless attacks on life, not even while a person is asleep.
Life is therefore ceaselessly under the power of Old age, illness and death.
It is because of this face that the Buddha always advised his disciples against being confident in life
There is a valuable document written by a physician who is well known for his knowledge in physiology and Buddhism.
The term birth in birth is suffering may be used to imply bhava or jati, the former referring to the entering into a plane of existence, whereas the latter meaning delivery.