A Syrian doctor told ITV News that his makeshift medical centre in Homs is forced to use out-of-date medicine and an operating theatre without fresh, clean water.
Dr Mosab wrote: "We have to drink from polluted wells and wash in the sewage water. We eat leaves and rotten rice
"Sick people here do not die due to medical treatment, but because of hunger and severe malnutrition, unhealed wounds, severe lack of food and absence of basic human necessities."
More top news
Up to 10cm of snow could hit parts of Britain today as forecasters predict a cold snap in the lead-up to the New Year.
Hacking group Lizard Squad claimed responsibility for the attack which left thousands struggling to access their accounts for hours.
Three men broke into a house on Christmas morning but when the owner said he had no money they took his pets instead.