A new global survey from Nature asked 3,785 PhD students in 107 countries what advice they’d give to someone about to start a doctorate. The answers are clear and pretty practical. Choose people before projects. Protect your mental health. Plan your money. And don’t ignore lab culture.
The topline
The single most common piece of advice was to choose a good supervisor. In Nature’s breakdown of responses, this accounted for following theme:
- 20% of all advice offered
- whether a PhD is right for you 15%,
- selecting the right topic 13%,
- planning finances 9%,
- picking the right university 8%,
- believing in yourself 7%,
- networking 6%, and
- being prepared and planning 6%.
The survey was designed with research firm Thinks Insight & Strategy and ran in mid 2025. Respondents were self-selecting; 44% identified as female, 25% as belonging to an ethnic minority in their country of study, and 33% were studying outside their country of origin. Full data are publicly available.
What this really means for would-be PhD students?
I. Pick your supervisor and lab with intent
Students repeatedly said that who you work with matters as much as what you work on. Pay attention to how potential advisers treat people and whether the lab culture fits you. Rotations, where offered, help you test this before you commit.
II. Be honest about your purpose
A PhD is a multi-year grind. Students urged applicants to check their motivations early, set boundaries, and treat mental health as maintenance, not crisis care. Several advised taking vacations without guilt and being willing to switch tracks if the work no longer feels meaningful.
III. Shape your project and build portable skills
Curiosity and persistence were seen as more reliable than chasing outcomes. Writing came up again and again as the skill that pays off later, inside or outside academia. Students also warned against outsourcing core thinking to AI tools; they see them as helpers, not substitutes.
IV. Expect friction and plan for it
Politics, favoritism, and cliques exist in academia like anywhere else. Students suggested joining peer groups or unions where available, and speaking up about misconduct. International students highlighted added hurdles around language and culture that require extra support.
V. Do the Math on Money too
Stipend realities matter. Students urged applicants to test whether funding covers a basic life in the host country and to weigh the opportunity cost of delayed savings for milestones like retirement or a home.
The survey sits alongside a growing body of work on graduate student wellbeing and imposter feelings. Prior Nature reporting and recent studies continue to flag high rates of stress and the need for better structural support from institutions. The message is consistent with what students told Nature this year. This was a voluntary, online survey promoted through Nature channels, which means results reflect the views of people motivated to respond and are not a random sample of all PhD students. Even so, the themes align with other literature on graduate education and mental health, which strengthens confidence in the takeaways. The full dataset and methods are published for scrutiny.
If you’re weighing a PhD, focus first on the humans you’ll work with, then on the project. Set boundaries early, plan your finances, and build skills that travel. That’s the composite advice from thousands of people living the doctorate right now.
