PEOPLE with long-term health conditions are being urged to take extra care.
Regional NHS bosses say those with conditions such as asthma and circulatory diseases face added risks at this time of year.
The most vulnerable are advised take precautions, such as keeping their homes heated to around 18C and getting the flu vaccination.
Paul Twomey, medical director for NHS England Yorkshire and the Humber, said: "It is important to be mindful of the immediate knock-on effect of cold weather.
"Patients with pre-existing conditions, such as chronic obstructive pulmonary disease, may not be aware that they are most at risk of falling ill in the days after temperatures drop.
"Freezing temperatures bring with them an increased risk of heart attack and stroke in the days immediately following a cold snap. Where possible, keep warm and only undertake essential journeys.
"Pharmacists are fully qualified to give advice on the best course of action for many ailments, and should be seen as soon as anyone feels unwell."
For more details, visit nhs.uk.
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