BELOW Speaks for itself
Pyongyang has reportedly asked a number of countries for food aid.
The United Nations has a team of international experts on the ground assessing the situation.
North Korea has suffered major food shortages in the past.
A famine in the 1990s saw hundreds of thousands of people - perhaps as many as two million - die of starvation.
Did it say up to two million died of starvation , above?
By jove . I can't wait to get there . Sounds great .
It is well documented that during food shortages in the North, people will forage for weeds, herbs and wild grasses to supplement their meagre diet.
What is harder to know is the extent to which this is normal or something out of the ordinary.
The charity workers - from Christian Friends of Korea, Global Resource Services, Mercy Corps, Samaritan's Purse and World Vision - spent a week in North Korea earlier this month, invited by the government.
In their report, they say they visited hospitals, orphanages and homes as well as farms and warehouses in the north-west of the country.
The agencies report the Pyongyang government saying between 50% and 80% of the wheat and barley planted for harvesting in the spring has been killed by the extreme cold of the past two months, as well as potato seedlings.
The team also says hospitals reported an increase in malnutrition over the past six months - the aid workers themselves saw acute cases too.
The United Nations currently has a team of food experts in North Korea.
A spokesman said as well as there being a known shortfall of nearly a million tonnes in cereals, the last vegetable harvest was much poorer than expected.
It is understood that North Korea's embassies have been asking foreign countries to provide aid.