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What makes people smile?

The top 30 simple things that make us smile include a kind gesture from a stranger, waking up on a sunny morning – and seeing an elderly couple holding hands.

A study of 2,000 adults found seeing a loved one get good news, receiving a surprise gift and getting a hug also feature on the list.

While others experience the same joy after getting into bed with freshly washed sheets, seeing an old friend and watching a puppy.

But for 46 per cent of people, simply having someone smile at you makes you feel happy, with 65 per cent of adults saying that it improves their mood.

And that positive boost lasts for an average of more than 13 minutes, leaving them more likely to be kinder to others (37 per cent), be more motivated (19 per cent) or make a bold decision (nine per cent).

Bupa Dental Care commissioned the research as part of National Smile Month, to highlight the benefits the friendly gesture can have.

However, an experiment saw just 21 per cent of adults return the friendly gesture from a stranger.

Reasons why people don't always return a smile

The research also found the average adult claims to smile at a stranger five times a week – but 16 per cent admit they rarely or never return the gesture.

Of these, a third blame it on simply being lost in their own thoughts and not paying attention to what is happening around them, while 20 per cent put it down to being in a rush.

But 27 per cent avoid smiling at others over fears they will ‘look weird’ and 14 per cent are too embarrassed.

However, when a stranger smiles at them, half of adults feel happy and 32 per cent feel uplifted.

Others feel comforted (11 per cent), ‘warm and fuzzy’ (15 per cent) and confident (11 per cent).

Less than one in 10 felt a negative emotion, such as confused (eight per cent) or sceptical (nine per cent).

Despite this, less than half (48 per cent) always return a smile from a stranger, with 34 per cent of those worried the grin was not meant for them.

While 32 per cent claim to be so surprised by the gesture that they don’t react quick enough.

But when the smile is not returned, 30 per cent are still pleased they made the effort – as you never know what someone has going on in their life.

Caitlin Miller, head of dental hygiene and therapy at Bupa Dental Care, which is marking its 25th anniversary throughout 2024, added: “The power of a smile is huge – especially when it comes from someone else and is unexpected.

“We’ve all been there, when we’ve missed to smile back at someone, but equally when we’ve caught a smile from a stranger, and it sets us up positively for the day.

“The impact it can have on you and someone else can’t be underestimated.”

Caitlin's tips to improve your smile

  • Brush and clean in-between your teeth daily to remove plaque and food particles that can lead to decay and gum disease to keep your smile looking healthy
  • Maintain a healthy diet, limit sugary and acidic foods and drinks that can erode enamel and cause decay and impact the appearance – and health – of your teeth.
  • Make regular visits to a dental hygienist, who can remove yellowing calculus and tooth staining to give you a brighter smile. 
  • Avoid tobacco products: Smoking and vaping can stain your teeth, cause gum disease and increase your risk of oral cancer. Quitting can significantly improve your oral health and the appearance of your smile.
  • Smile tips from Jo Hemmings

    Top 30 things that make you smile

  • Going on holiday
  • A sunny morning
  • Receiving a kind gesture from someone
  • Receiving a smile from someone 
  • A loved one getting good news
  • Doing something that makes someone else laugh or smile
  • Receiving a surprise gift
  • Winning some money
  • Getting a thank you
  • Sitting in the sun
  • Getting into bed with freshly washed sheets
  • Having a cuddle
  • A relaxing, scenic walk
  • Hearing a song that reminds you of something happy
  • Getting a nice, unexpected message
  • Seeing an old friend
  • Looking back at old photographs
  • Getting a spontaneous kiss or cuddle from a loved one 
  • Booking a holiday 
  • Seeing a funny video online 
  • Seeing a puppy 
  • Finding a bargain in the sales  Hearing a child or baby giggle 
  • Finding money in an old pair of jeans
  • Bumping into someone you haven’t seen for ages
  • Spending time with your pet
  • Getting the answers right when watching a TV quiz
  • Sitting down in a home you have just cleaned
  • Seeing an elderly couple holding hands
  • Waking up on a Saturday morning and realising it is the weekend

  • Download our dental anxiety fact sheet


    For an easily digestible fact sheet of tips, tricks and stats, download this dental anxiety inofgraphic.
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