Are personalised vitamins the key to good health?

Tailor-made supplements are being touted as the path to a healthier, happier, younger-looking you. Whether they work and whether they're necessary is moot, say experts

Could a customised supplement plan created specifically for you be the answer to refreshing sleep, easy weight loss and a sunny state of mind? These are just some of the promises offered by the world's personalised vitamin providers as I flick through their various questionnaires, each hinting at the tantalising possibility of looking healthier, happier and younger, all for the price of a subscription.

I settle on one particular provider, Nourished, a company that offers an intriguing blend of tailored vitamins and 3D printing for a monthly fee of 35.99. Rather than popping a series of pills each morning, it promises to combine all the nutrients you need - based on your answers to questions that range from the minutiae of your exercise regime to how regularly you travel internationally - into a single layered gummy.