Elderly and vulnerable Lincolnshire residents have been advised to take extra care during the icy weather.
East Midlands Ambulance Service has warned long-term illness sufferers to avoid strenuous activity during the extreme cold, which can worsen medical problems.
EMAS medical director Dr James Gray said: “The cold has an adverse affect on many long-term conditions and strenuous activities such as shovelling snow in freezing temperatures can increase the risk of heart attack to those who are already vulnerable.
“Keeping warm is key to keeping well - it’s especially important that elderly people heat their home and have hot meals as they’re more vulnerable to the effects of the cold.
“Slips and trips on ice and snow, as well as road traffic accidents due to driving without due care in freezing conditions, account for a large number of calls during winter.
“We’d advise everyone to be extra careful and not take risks.
“People can make a real difference to elderly neighbours by checking that they’re well this winter and offering to help with shopping if it’s hard for them to get outside.”
EMAS has advised patients to collect their prescriptions in advance of forecasted bad weather and to take items such as inhalers or heart medication whenever they leave the house.
Households are also recommended to keep a well-stocked first-aid kit including treatments for colds, flu, sickness and diarrhoea.