Contrary to viewing adversity's effects as mere dysfunction, an evolutionary lens suggests they are adaptations. For example, accelerated puberty in response to a threatening environment increases the chances of passing on genes, prioritizing reproduction over long-term health, neatly summarized as 'live fast and die young.'

Many childhood cancer survivors do not receive lifelong specialized follow-up, yet they face significantly increased health risks decades later. The solution is not to keep all patients in specialist clinics, but to build stronger relationships with primary care providers by equipping them with treatment summaries, screening guidelines, and open lines of communication.

When we hear stories of how ancestors overcame challenges, we internalize them as "vicarious memories." These are not just tales but mental models of resilience that act as a psychological buffer against our own adversity. This has been observed in studies of children post-9/11 and military veterans.

When examining chronic health conditions, older childhood cancer survivors show a striking pattern of accelerated aging. They present with the same rates of multiple co-existing chronic conditions as their siblings who are two decades older. This quantifies the profound and lasting physiological impact of their early-life cancer treatments, leading to premature frailty.

Beyond simple resilience, "post-traumatic growth" is the scientifically-backed idea that all humans can use adversity to build a psychological immune system. Overcoming challenges creates a memory of capability, making you better equipped to handle future adversity, from losing a deal to losing a job.

In survivors over 50, an increased risk of secondary cancers is specifically associated with prior radiation treatment received 30+ years ago. The study found no similar association with chemotherapy exposures, highlighting the exceptionally long-term and distinct risks of radiation. This underscores the importance of modern efforts to reduce or eliminate its use.

Trauma's definition should be tied to its outcome: any permanent change in behavior from an adverse event. This reframing allows for "positive trauma," where a difficult experience forces you to adapt and establish a new, higher-performing baseline, ultimately making you better off.

The common narrative that recovery ends with a cure is a myth. For many survivors of major illness, the aftermath is the true beginning of the struggle. It involves grappling with post-traumatic stress, a lost sense of identity, and the challenge of reintegrating into a world that now feels foreign.

Psychologists can predict the severity of a person's depressive and anxious symptoms not by the content of their trauma, but by the form of their narrative. Recurring, stuck narratives, or what is called the "same old story," correlate with poorer mental health outcomes.