Does everyone need to take a vitamin D supplement?

You may have heard that everyone should take a vitamin D supplement. But what’s the science behind that? And are some brands better than others? In the fourth episode of a brand new series of our health and wellbeing podcast, we sit down with Shefalee Loth, a public health nutritionist at Which?, and Sophie Medlin, founder of City Dietitians to explain how you can naturally get vitamin D, when you should be taking supplements, and the risks of getting too much into your body. Plus, for the first time ever, Which? has tested and reviewed vitamin D supplements from a range of suppliers. We reveal some of the best on the market, plus which of those received the coveted Which? Best Buy. Which? members can listen to the full episode where we reveal our test results by clicking here. If you're not already a member, join Which? to instantly listen to the podcast and gain access to all of our product reviews - all for 50% off your first year's membership. Read all of our review of viamin D supplements & sign up for our free monthly Food & Health newsletter

In August, the average credit card APR reached a record high of 35.7%. But with some balance transfer cards currently offering up to 34 months interest-free, is it time to switch? In this episode, we’re joined by Which? Money journalist Holly Lanyon and Adam French, Head of News at Moneyfacts to explain why rates of APR are climbing so high and what to look out for before applying for a new card. Plus, with retailers like Ikea now unveiling their own types of credit card, we explain the benefits and risks involved with using cashback and reward cards. Read more about switching to a different credit card & sign up for our free weekly Money newsletter Find out the best credit card deals this month & read more about the latest cashback and reward cards Listen to our episode about credit scores Click here to send us an email Get 50% off an annual Which? membership Become a Which? Money member to access 1-to-1 guidance

In this episode of Which? Shorts, we explain how you can make the most out of the precious amount of time you get in a dentist's chair. From explaining your problems to the receptionist to basic dental care at home, we round up the best advice with help from those in the dental industry. Read more expert tips for keeping your teeth healthy at home & sign up for our free monthly Health newsletter Read our reviews of the best electric toothbrushes Become a Which? member for 50% off the usual price

Do you know what’s in your supplements? Or are they full of stuff you don’t actually need? In the third episode of a brand new series of our health and wellbeing podcast, we sit down with Shefalee Loth, a public health nutritionist at Which?, and Sophie Medlin, founder of City Dietitians to explain what fillers, bulkers and additives are and why they're found inside our supplements.They explain when certain fillers can be a cause for concern and how you can find out what ingredients make up the supplements you have at home. If you're not already a member, join Which? to instantly listen member exclusive podcasts and gain access to all of our product reviews - all for 50% off your first year's membership. Read more about fillers, bulkers and additives & sign up for our free monthly Food & Health newsletter

Funeral costs are at an all-time high, so could paying for yours while you’re still alive be considered to avoid giving your family a financial shock when you’re gone? Whether you’re looking for a standard funeral plan, something more premium, or a cheaper direct cremation, paying for your service ahead of time can save you and your family a lot of money, but there are some factors to watch out for. In this episode, we’re joined by Which? Money journalist Holly Lanyon and Simon Cox, Director of Funeral Solution Expert to weigh up what you should consider before paying for your funeral. Read more about the different types of funeral & sign up for our free weekly Money newsletter Click here to send us an email Get 50% off an annual Which? membership Become a Which? Money member to access 1-to-1 guidance

In this episode of Which? Shorts, we round up the quickest steps you can take to slash your broadband and mobile bills.We explain how much you should be paying, which providers are head and shoulders above the rest, and why you shouldn’t always be tempted by the headline figures.Read more of our advice on switching & sign up for our free monthly Tech newsletter Compare the very best broadband deals & mobile network deals. Become a Which? member for 50% off the usual price

Official support for Windows 10 ends on 14 October 2025, meaning Microsoft will no longer offer fixes, new features or security updates after that date, unless you take action. If you do nothing, you'll be vulnerable to hackers. On this podcast, we sit down with Which? Tech Editor Lisa Barber, and our resident laptops expert Oliver Trebilcock to talk you through what's happening, why it's happening, plus the actions we recommend you should take. Which? members can listen to the full episode where we reveal our Best Buy products by clicking here. If you're not already a member, join Which? to instantly listen to the podcast and gain access to all of our product reviews - all for 50% off your first year's membership. Read how to factory reset a Windows 10 PC before recycling it & other tips for preparing for the end of Windows 10. Find out how to convert your PC to Linux & find the best laptop deals on our website. Listen to our podcast explaining why a new desktop might be your best option & why you should consider switching to a Mac. Read the list of all our Just Buy This products, our Just Buy This Windows laptop, budget laptop, and Macbook. Read our reviews of the best all-in-one computers & external hard drives.

What are multivitamins? And do you actually need to take them?In the second episode of a brand new series of our health and wellbeing podcast, we sit down with Shefalee Loth, a public health nutritionist at Which?, and Sophie Medlin, founder of City Dietitians to explain what magnesium is, how taking it could lead to a better night's sleep, and how else it can support a healthy lifestyle.Plus, for the first time ever, Which? has tested and reviewed magnesium supplements from a range of suppliers. We reveal some of the best on the market, plus which of those received the coveted Which? Best Buy. Which? members can listen to the full episode where we reveal our test results by clicking here. If you're not already a member, join Which? to instantly listen to the podcast and gain access to all of our product reviews - all for 50% off your first year's membership. Read all of our review of magnesium supplements & sign up for our free monthly Food & Health newsletter Listen to our podcast about getting a better night's sleep

Some of the UK’s biggest banks are financing fossil fuel industries to the tune of tens of billions of pounds and some are even going backwards on environmental policies, according to new Which? analysis of 16 current account providers. In this episode, we’re joined by Which?’s Banking Investigator Chiara Cavaglieri and Louise Wagner, Banks Campaigner at Reclaim Finance to explain how we carried out our research, which banks have been awarded our Eco Provider endorsement, and what you can do to avoid the worst offenders. Read our reviews of the banks from our research & sign up for our free weekly Money newsletter Click here to send us an email Get 50% off an annual Which? membership Become a Which? Money member to access 1-to-1 guidance

In this episode of Which? Shorts, we explain how buying a desktop PC could change the way you work from home forever. When you picture a desktop PC, your mind may wander back to the beige boxes and huge CRT monitors of the 90s. But as we advance through the 21st century, the truth is quite different, and a new model might be just what you're after. Read more about finding the right desktop PC for you & sign up for our free monthly Tech newsletter Become a Which? member for 50% off the usual price