Health chiefs in Nottingham are advising vulnerable people to take care ahead of possible cold weather.
Nottingham City Primary Care Trust said that nationally 20,000 people due to cold weather with those with heart and lung conditions particularly at risk.
It is reminding people, especially the over-65s, to keep their houses warm and eat regular hot meals.
Help was available with fuel payments, flu jabs and health advice for many in these groups, a spokesman said.
While cold weather and possible snow was expected to pass quickly, more wintry conditions were forecast for later in the month.
Nottingham City PCT's Director of Public Health, Dr Chris Packham said: "Keeping your house warm - around 21C or 70F during the day - is especially important for older people.
"Cold weather can lower body temperature increasing the risk of heart attacks, strokes, breathing difficulties and pneumonia.
"Try and look out for elderly neighbours and relatives, and don't forget that everyone 65 and over should have a flu jab. If in doubt, contact your GP or NHS Direct."