On the occasion of World Cancer Day on Wednesday 4 February 2026, the Luxembourg-based Fondation Cancer has called for a shift in perspective on the disease and on those living with it.
The Fondation Cancer stressed that cancer is not always visible, neither during nor after treatment - and this invisibility still too often contributes to misunderstanding and stigmatisation.
Contrary to popular belief, not everyone with cancer shows obvious outward signs. Some therapies, however demanding, do not lead to immediately noticeable physical changes. Profound fatigue, pain, cognitive difficulties, anxiety or persistent side effects can nevertheless profoundly impact daily life, without being recognised by those around them. Even during treatment, this invisibility can give the impression that the disease is "less serious" or easier to bear, which the Fondation Cancer argued is far from the truth.
After treatment, when visible signs disappear and medical appointments become less frequent, difficulties often persist. Resuming a so-called "normal" life requires time, energy and understanding, the foundation emphasised, adding that those affected then face implicit expectations of a quick return to peak performance, both in their personal and professional lives.
"Even well-intentioned phrases like 'It will be okay' or 'The worst is behind you' can minimise pain and anxiety," explained Martine Risch, Head of the Psychosocial Department.
This World Cancer Day, the Fondation Cancer is aiming to remind the public that the disease is not defined by its appearance or a specific period. Cancer, and its after-effects, can remain invisible at every stage of the journey. The foundation said it was essential to changing the perspective, both individually and collectively, in order to better support those affected. It added that these individuals do not expect pity or preferential treatment, but rather genuine recognition of what they are going through.
The Fondation Cancer's psychosocial department supports patients and their loved ones before, during and after treatment.
Personal Testimony
The Fondation Cancer also shared the personal testimony of Tanja D'Angelo, who was diagnosed with breast cancer in December 2022. She had to undergo surgery, followed by radiation and chemotherapy. Today, she is in remission but continues hormone therapy to prevent a relapse. "When I went back to work, I quickly realised I wasn't quite myself again," she said. "For months, I continued to struggle with the severe after-effects of chemo and radiation."
Like many other patients, she suffered from what is known as "chemo brain" - a cognitive impairment that can cause memory problems, slowed thinking or difficulty concentrating. "It's not as visible as hair loss, but it's just as real - and just as debilitating," Tanja said.
