Seven out of ten people know someone with cancer, while 63% have or have had a family member or close friend with cancer, research for Macmillan Cancer Support has found.
One in three have or have had a parent, child or sibling with cancer, the survey conducted by NFP Synergy of over 1000 British adults found.
Over two-fifths (42%) of those surveyed were living with cancer or had it in the past or knew family or close friends with cancer.
The research also found that 34% do not feel confident about providing someone they knew with emotional support when they have cancer.
In addition, over a quarter (29%) said that they did not feel confident about providing practical support.
Fran Woodard, director of policy and research at Macmillan Cancer Support, said: "It's a devastating reality that more and more people are getting cancer and today's findings sadly show us that most of us have someone close to us who has been diagnosed.
"Thankfully, people are living longer with cancer, but it can be a lonely time when you are going through treatment and even afterwards, when you are getting back to work, family and social life."
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