Danny Brom, director of METIV: The Israel Psychotrauma Center, said some will need medical treatment but others will not.
Since the latest round of releases began on Friday, with Israel releasing some jailed Palestinians in exchange, the freed hostages have been kept away from the media.
Most of the 240 hostages that Israel says were seized on Oct. 7 are still in captivity.
Hamas portrays the treatment of hostages as humane, and says it has treated the hostages in accordance with Islamic teachings to preserve their lives and wellbeing.
Officials at Israeli hospitals say hostages experienced poor nutritional health, and many with chronic diseases were denied medical treatment, causing serious health problems.
Persons:
Gal Goldstein, Danny Brom, Brom, Deborah Cohen, France's, Eitan Yahalomi, Thomas Hand, Emily Hand, Hand's, Emily, Yair Rotem, Hila Rotem Shoshani, Raaya, Merav Mor Raviv, Keren Munder, Ohad, Ruth, Elma Avraham, Tali Amano, Ahal Besorai, Alma, Noam, Besorai, Adva Adar, Yaffa Adar, Daniel Aloni, Emilia, Daniel, Howard Goller, Timothy
Organizations:
Hamas, Schneider Children's Medical, Israel Psychotrauma Center, CNN, Israel's, Reuters, Timothy Heritage, Thomson
Locations:
Gaza, Palestinian, Israel, JERUSALEM, pita, Israeli