Exposure Worry: An in-depth study of British Nuclear Test Veterans
What was the aim of this research?
This PhD study explored how exposure worry affects people’s lives, especially British nuclear test veterans, who witnessed or were involved in nuclear weapons testing during the 1950s and 60s. The outcomes of this study are helping us to understand how stress, worry, and health beliefs can influence ageing and brain function.
Why is this important?
Many nuclear test veterans have lived for years with unanswered questions about how being at nuclear test sites might have affected their health — and possibly their families’ health too.
Even if the exposure was low, the worry itself can still have lasting effects. Understanding how stress and anxiety over many years affects mental health, especially when it comes to ageing, can help veterans, families, and health services provide better support as people grow older.
What is ‘exposure worry?
“Exposure worry” refers to the ongoing concern people may feel after being exposed — or believing they’ve been exposed — to radiation. Even if the actual level of exposure was low or similar to everyday background radiation, the worry alone can have lasting effects on mental and physical wellbeing. It can also include fears about long-term health effects or potential risks to children and grandchildren.
What do we already know?
- Worry and stress can affect brain health over time — especially in older adults.
- Studies of people affected by Chernobyl and Fukushima show that even low-level radiation exposure can lead to long-lasting anxiety and mental health issues.
- Unhealthy coping habits, like smoking or heavy drinking, often connected to stress, can also impact memory and thinking later in life.
How was the study being carried out?
Researchers worked directly with British nuclear test veterans to help shape the study. Participants then:
- completed short questionnaires about their background and levels of worry
- underwent structured interviews to share more about their experiences
What did the study find?
1. Collett et al., 2020: The Power of Perceived Exposure
A review of existing research on radiation and mental health found that:
- Just believing you’ve been exposed to radiation — even if the dose was very low — can cause stress and anxiety.
- That stress alone may affect how well the brain functions as we age, possibly more than the radiation exposure itself.
- Both radiation and stress can cause inflammation, which may play a role in memory problems and cognitive decline.
- The researchers argue that these combined effects deserve more attention, especially when studying low-dose radiation
2. Collett et al., 2021: Veterans’ Experiences with Worry and Anxiety
- This part of the study looked at 89 British nuclear test veterans and found higher-than-average levels of anxiety compared to the general older population.
- Some veterans were interviewed in-depth. Not all felt affected, but many expressed concerns for their grandchildren’s health, more so than their own.
- A few described feelings of guilt or responsibility when family members experienced health problems.
- Many veterans also expressed anger and frustration over perceived deception and negligence in authorities.
- Research highlights the importance for authorities to emphasise transparency and accountability when addressing the potential health risks of real or perceived exposure.
3. Collett et al., 2022: How Veterans View Their Health
- This part of the research focused on how veterans think about their health and what they believe caused any health issues.
- Many described themselves as “lucky” — both for their own health and that of their families.
- Most linked their health problems to normal ageing or lifestyle, not directly to the nuclear tests.
- However, some were frustrated when doctors dismissed their concerns by saying symptoms were “just part of ageing.”
- The study suggests that healthcare professionals could better support veterans by understanding the context of their worry and their personal history and beliefs.
Significance and Impact
This study isn’t just about radiation — it’s about understanding the long-term impact of worry and how life experiences affect the mind as we age. By taking part, veterans have helped shed light on this important issue.
Researcher George Collett supervised by Dr Wendy Martin and Dr Rhona Anderson