QUESTION: Fix punctuation: The LDL form is not dangerous in itself but becomes dangerous in the presence of active free radicals eg from the kind of iron strain stemming from large iron depots in the body that are being precipitated as the substance of plasma ferritin
ANS: The LDL form is not dangerous in itself but becomes dangerous in the presence of active free radicals, e.g. from the kind of iron strain stemming from large iron depots in the body that are being precipitated as the substance of plasma ferritin.

QUESTION: Fix punctuation: You cant be happy if you are not willing to give up your will your own lusts and your demands
ANS: You can't be happy if you are not willing to give up your will, your own lusts, and your demands.

QUESTION: Fix punctuation: Christened at home in Bederslev Denmark
ANS: Christened at home in Bederslev, Denmark

QUESTION: Fix punctuation: President Barroso said Greeces future passes through restoring both financial stability and growth potential
ANS:
President Barroso said: " Greece's future passes through restoring both financial stability and growth potential.