The inmates claim that agreements reached after a similar strike last April have still not been implemented.
The organization is "particularly concerned" about their health, noting that the strike had been organized by the journalists to protest inhumane and degrading prison treatment.
"We just needed one thing," he said, and opened a chocolate bar.
Smoking has made a comeback in the Jewish state, where overall tobacco usage rates outpace those in comparably-developed countries.
A senior Palestinian official said prisoners are working to pressure Israel to end its policy of administrative detention.
Politicians and bereaved families are demanding government investment in security for West Bank settlers.
Rencontre avec Yariv Cohen, directeur adjoint d’une prison de haute sécurité qui compte parmi les détenus les plus dangereux du pays