Everything you need to know about vitamin D

Out of all the vitamins, D is the most contentious. It’s necessary for calcium absorption, and to keep bones and muscles strong, but the best way to get it is to go into the sun without – gasp! – full SPF protection. Given we live in the skin cancer capital of the world, but one in four Australians are vitamin D deficient, that makes it rather a delicate conundrum.

“You need UV-B to make vitamin D,” explains Professor Rebecca Mason from The University of Sydney. “But ultraviolet also causes skin damage, particularly to DNA. If that isn’t properly repaired it can lead to skin cancers.”

Sunscreen blocks UV-B, which means it also interferes with vitamin D production. That’s why total sun avoidance is no longer recommended.

everything you need to know about vitamin d

One in four Australians are vitamin D deficient.

“Around 2005 it was recognised by medical and scientific organisations that there were benefits as well as risks from sun exposure,” says Professor Mason.

“We know low vitamin D puts people at higher risk of falls and fractures and is associated with worse outcomes in pregnancy. There’s also evidence that vitamin D may help people fight infections, and that it protects to a small extent against inflammation and some auto-immune diseases.”

A balanced approach for most Australians (anyone not at higher risk of skin cancer) is to plan for vitamin D exposure in short bursts and the best time to do that is now.

“You need to build up your skin defences when the sun is not so strong and keep sun exposure short,” says Professor Mason, who cautions that excess sun exposure is never a good idea, and not just because of the skin cancer risk.

“If you keep exposing skin to sunlight for too long, you start to break down the vitamin D that has been made before it can be absorbed into the body.”

everything you need to know about vitamin d

Safe sunlight exposure is the best way to absorb the this vitamin.

How much UV-B is enough? That depends on where you live, how much skin is exposed and how much pigment is naturally in your skin (the darker your skin, the longer it takes to make vitamin D).

“As a rough rule of thumb, no matter where you are in Australia during summer and the later parts of spring and early autumn, if you have light to slightly dark skin and go out at least four times per week between mid-morning and mid-afternoon wearing the equivalent of shorts and a short-sleeved shirt, then 5-10 minutes in the sun should be enough to maintain vitamin D at acceptable levels,” says Professor Mason.

“In the early morning or late afternoon not much, if any, vitamin D  will be produced. The main message to remember is that for sunlight, like many other things, moderation is key.”

Sunlight is the best source of this particular vitamin, but safe sun exposure is still essential. Be wary of even small amounts of sun exposure if you have:

  • very light skin
  • red hair
  • freckles or moles
  • history of melanoma
  • been on medications that suppress the immune system.

OTHER NEWS

22 minutes ago

Legendary coach highlights one aspect that will ‘pay huge dividends’ for Jannik Sinner on grass

22 minutes ago

Nasreddine Nabi confirms he’s held talks with Kaizer Chiefs, but has other offers as well — report

22 minutes ago

Finder survey shows nearly 50 per cent of Aussies are reluctant to travel abroad

22 minutes ago

Today in Politics: Amit Shah to chair high-level huddle on J-K security, Amarnath Yatra preps

22 minutes ago

Wells Fargo Bet on a Flashy Rent Credit Card. It Is Costing the Bank Dearly.

22 minutes ago

Swiss right-wing leader calls Ukraine summit an 'embarrassment'

26 minutes ago

Emma Raducanu REJECTS Team GB wildcard for the Paris Olympics as she continues to ease her way back after injury hell... while Andy Murray is set for a fairytale send-off at the Games

26 minutes ago

Video: 'Hardest Geezer' Russ Cook arrives in Germany for Euros after running 352 miles to support England - and predicts Three Lions victory over Serbia

26 minutes ago

Former sub-postmaster slams 'buffoonery' of Ed Davey's stunt-laden election campaign as Lib-Dem leader faces questions over lack of help during Horizon scandal when he was a minister

26 minutes ago

John Farnham's newly married son Rob shares first photos of his music legend father following cancer surgery that saw 26 doctors reconstruct his jaw

26 minutes ago

Anne is praised as 'outstanding horsewoman' after Princess Royal managed to keep control of her horse during Trooping the Colour

26 minutes ago

Poland vs Netherlands - Euro 2024: Live score, team news and updates as Virgil Van Dijk aims to captain 1988 winners to victory in opening Group D clash

26 minutes ago

Video: Hippy-crack driver, 24, who killed cyclist, 56, as he inhaled laughing gas from a balloon while driving BMW with his knees is jailed - as horrific CCTV shows moment car knocks down nurse

26 minutes ago

Gloating masked Serbian thugs pose with 'stolen' England flags ahead of Three Lions clash - amid fears that mob of violent hooligans will spark chaos at the Euros

26 minutes ago

Video: 'Is my mother still alive?': Hostage Noa Argamani's first words revealed after she was rescued by Israeli special forces - as dramatic footage shows daring raid on Hamas compound

26 minutes ago

Video: Anne is praised as 'outstanding horsewoman' after Princess Royal managed to keep control of her horse during Trooping the Colour

26 minutes ago

Euro 2024: Man shot by Hamburg police after axe attack

26 minutes ago

German police shoot person armed with axe ahead of Euro 2024 game in Hamburg

26 minutes ago

Why has Ed Davey been throwing himself in the water to win the Lib Dems votes?

26 minutes ago

Kate shares touching new photo of William with George, Charlotte and Louis to mark Father’s Day

26 minutes ago

Grace Kim shoots 66 to take five-shot lead in Meijer LPGA Classic

26 minutes ago

NASCAR starting lineup for Iowa Speedway

26 minutes ago

Euro 2024: Serbia's superstar coach names the England star his side fear most

26 minutes ago

Tottenham scouts in attendance for €30m attacking talent primed to star at Euro 2024

26 minutes ago

New signs warning of great white sharks in the works for some East Coast beaches

26 minutes ago

Arsenal To Hold Talks With Declan Rice Over Position

26 minutes ago

Exclusive poll: Black voters aren't thrilled with Biden but dislike Trump more

26 minutes ago

How I dress for five days of Royal Ascot

26 minutes ago

Arsenal news: Edu faces transfer delay as Gunners name fee for midfielder star

26 minutes ago

Princess Charlotte's touching act during carriage ride to stop rain ruining Trooping parade

26 minutes ago

Gareth Southgate sends England stars message that leaves no doubt over Euro 2024 plans

34 minutes ago

PepsiCo announces plans to triple size of its electric fleet: 'Good for the planet, good for our business'

34 minutes ago

Elon Musk vs BJP's Rajeev Chandrashekhar on whether EVMs can be hacked

34 minutes ago

Euro 2024: Kylian Mbappé and France aim to start with a win over on-form Austria

34 minutes ago

I'm a female breadwinner who retired my husband. I was worried I'd resent him, but I'm a better leader and wife because of it.

34 minutes ago

Ukraine opens its Euro 2024 campaign against Romania amid backdrop of war back home

34 minutes ago

Poland vs. Netherlands Euro 2024 time, live stream, TV channel, lineups to watch Group D match in Australia

34 minutes ago

I'm nearly 90, worth more than £200 million and still starting new businesses. Here's how I did it - and my eight tips for getting rich

37 minutes ago

Woman shot by police in public park after allegedly wielding knife

38 minutes ago

Pennsylvania waste management facility collects millions of dollars worth of tossed out coins