Aid agencies, governments and UN’s food security monitor report evidence of worsening starvation, particularly among under-fives

Humanitarian experts and doctors are warning that children, elderly people and those with pre-existing health conditions are most at risk of famine in Gaza.

Pro-Israeli activists and Israel’s foreign ministry have tried to challenge the veracity of shocking pictures that have appeared in the international media, despite widespread and well-documented evidence of growing and worsening famine under conditions of Israeli restrictions on aid.

One such picture, which was used widely by the international media, including the Guardian, showed a young boy suffering from severe malnutrition, who it subsequently transpired also had a pre-existing health condition.

Experts say that children under the age of five, including those with other health issues, and elderly people, will always be most vulnerable in the circumstances of famine.