GPs are now ‘prescribing’ time in nature. Is it likely to improve your health?

The Royal Australian College of General Practitioners has endorsed resources to help doctors prescribe time in nature to improve patients' health. Spending 20 minutes a day connecting with the natural world, such as walking through a park or gardening, has been shown to have recognized health benefits. However, it is unclear whether a doctor's recommendation alone leads to these benefits.

There is evidence that nature-based activities can improve mental health, with 17 out of 47 trials finding significant improvements in depression, anxiety, and stress. Some studies also suggest potential benefits for physical health, including lower blood pressure and stress hormones.

The amount of time one should spend in nature is not yet known, as studies have yielded inconsistent results. An observational study found that people who spent two hours in nature each week reported better overall health and wellbeing, but this does not prove that two hours is the ideal amount for everyone.

Nature prescribing is a form of social prescribing, where health professionals encourage patients to engage in activities that support their health. Programs like Canada's PaRx and Park Rx America have shown promise, and England's green social prescribing trial also found improvements in mental health and increased daily steps among participants.

However, the evidence remains limited due to varying program delivery methods, referral processes, and outcome measurements. GPs may face challenges in providing practical advice, as not all doctors are familiar with the evidence or local activities. Access to safe and welcoming green spaces can also be an issue for some individuals, necessitating consideration of people's circumstances and access to suitable outdoor environments.