Families swapped crisps and chocolate for fruit and nuts as part of a four-week healthy eating challenge.
The Sugar Swap was run by Newark Home-Start and encouraged families to change their unhealthy eating habits for healthy ones.
The project linked in with the government’s Change For Life campaign, a national initiative offering advice on healthy eating and exercise, and received £500 in funding from the Lincolnshire Co-op.
Mrs Carla Brown, a fundraiser and community developer at Home-Start, said: “We are going to be doing projects throughout the year to encourage healthy eating.
“People are saying it is easier than they thought to change things.”
The project culminated with a get-together for participants at Barnbygate Methodist Church, Newark, where there was information on healthy eating, a presentation on oral health, and a prize draw for a hamper packed with healthy foods.
Miss Louise White, of Greenway, Newark, took part in the challenge with her son, Jack, 3.
He swapped chocolate Cheerios for Weetabix or Cornflakes, sugary juice for sugar-free, chocolate buttons for fruit and white bread for wholemeal.
Mrs White said she had noticed it made a big difference and would carry on with the changes.
“He loves fruit and it is naturally sweet anyway. His attitude has changed. He used to be quite hyperactive but now with less sugar he is more calm,” she said.
“It has made me change my habits as well. I used to drink lots of Dr Pepper but I don’t now.”
The next event will be a five-a-day challenge in April.
Caroline Adams, a community health worker with Newark and Sherwood District Council, said: “We hope to encourage people to do a bit more, eat a bit healthier and live longer as a result.”