The increase in certain cases of colorectal cancer among young adults has attracted growing interest within the scientific community and has highlighted the need to strengthen prevention, early diagnosis and research strategies.
Although individual risk remains low, early detection continues to be one of the factors with the greatest impact on disease prognosis. At IVOQA (Viamed Institute of Advanced Surgical Oncology), we approach colorectal cancer from a multidisciplinary perspective, integrating advanced diagnostic techniques, highly complex oncological surgery, clinical research and personalised treatments to provide the best possible care at every stage of the patient journey.
This content has been prepared with the collaboration and review of Dr. Delia Cortés, Director of IVOQA, who has contributed her clinical expertise to ensure the accuracy and quality of the published information.
Colorectal cancer is no longer only a disease of older age
Colon cancer is increasing globally among younger patients due to a complex interaction between environmental factors, modern metabolic habits and genetic predisposition.
This shift in the patient profile has challenged traditional clinical patterns, making early prevention an increasingly urgent need for the active adult population.
What do current statistics say about early-onset colon cancer?
Epidemiological databases show a sustained increase in cases among people aged between 20 and 49 over recent decades. This shift in the age of incidence has led international scientific societies to reconsider traditional screening strategies in order to protect younger adults.
Why diagnosis is often delayed in younger patients
Early detection often fails because there is initially a low level of clinical suspicion among both patients themselves and primary care physicians. Early symptoms are commonly and incorrectly attributed to common benign conditions, delaying decisive diagnostic tests:
- Haemorrhoids or anal fissures: a common cause that is often mistakenly blamed whenever rectal bleeding occurs.
- Irritable bowel syndrome: a commonly made diagnosis when changes in bowel habits or abdominal cramps occur.
- Food intolerances: a frequent explanation used to avoid investigating chronic difficult digestion.
Why are cases of colon cancer increasing among young people?
The increase in colon cancer among young people is mainly associated with the adoption of ultra-processed Western diets, prolonged sedentary lifestyles, significant alterations in the gut microbiota and undetected inherited mutations.
Identifying the factors driving this trend is the essential first step towards changing behaviours and activating clinical prevention:
- Lifestyle changes: Western-style diet and ultra-processed foods
Excessive consumption of processed red meat, saturated fats, refined sugars and chemical additives alters normal digestive processes. This poor-quality dietary pattern promotes a state of chronic inflammation of the intestinal mucosa that progressively damages the DNA of colon cells.
- The impact of sedentary lifestyles and obesity from an early age
A lack of regular physical activity slows intestinal transit, prolonging the time that waste products and toxins remain in contact with the intestinal walls. Obesity and the accumulation of adipose tissue act as metabolic disruptors that stimulate the growth of abnormal cells.
- Alterations in the gut microbiota
Indiscriminate use of antibiotics during childhood and chronically low-fibre diets reduce the diversity of protective gut bacteria. This intestinal dysbiosis weakens the local immune barrier of the colon, leaving it more vulnerable to carcinogenic agents.
- Genetic factors and family history: Lynch syndrome
Unlike sporadic cases linked to lifestyle, a proportion of early-onset tumours are related to inherited factors. Lynch syndrome and adenomatous polyposis are genetic conditions that require close monitoring from a young age in specialised units.
Key symptoms of colon cancer that people under 50 should not ignore
Key symptoms of colon cancer in younger people include blood in the stool, unexplained changes in bowel habits, unintentional weight loss and cramp-like abdominal pain. These symptoms are considered a warning sign when they persist for 6 weeks or more.
Learning to recognise these warning signs in your own body and visually identify them can help you consult a specialist promptly and appropriately:
- Blood in the stool: seeing dark red blood in the toilet should never be considered normal. It is the most common and one of the most frequently misdiagnosed symptoms in young adults and should always be clinically investigated.
- Changes in bowel habits: experiencing unusual episodes of persistent constipation, recurrent diarrhoea or noticing that stools become thin or ribbon-shaped for more than six weeks.
- Weight loss and chronic fatigue: losing a significant amount of weight without changing your diet, accompanied by extreme tiredness caused by hidden anaemia due to microscopic blood loss.
- Abdominal pain or cramps: experiencing a persistent feeling of pressure, painful gas or sharp pains in the lower abdomen that do not improve after a bowel movement.
Prevention, diagnosis and advanced treatment of colorectal cancer at IVOQA
At IVOQA, we approach colorectal cancer through a comprehensive strategy combining prevention, early diagnosis, highly complex oncological surgery and clinical research. Our aim is to detect the disease at its earliest stages, treat precursor lesions before they progress and offer each patient the most appropriate therapeutic option through a multidisciplinary and personalised approach.
Advanced colonoscopy: the standard for colorectal cancer prevention
Colonoscopy remains the reference technique for colorectal cancer prevention, as it allows polyps and other premalignant lesions to be identified and removed during the same procedure, preventing their progression into an invasive tumour.
At the Digestive Endoscopy Unit of Viamed Santa Elena University Hospital, we perform high-definition colonoscopies using advanced optical magnification and lesion characterisation technologies, improving diagnostic capability and therapeutic precision. The procedure is carried out under sedation, ensuring patient comfort and safety.
Non-invasive early diagnosis
In addition to colonoscopy, at IVOQA we offer non-invasive genetic stool-based early detection tests, including the Mirnax test, which can identify biomarkers associated with colorectal cancer and precursor lesions, such as polyps or advanced adenomas, before symptoms appear. These tools help identify patients who may benefit from an endoscopic evaluation and represent an important complement to screening and prevention programmes.
Advanced oncological surgery for colorectal cancer
When surgical treatment is indicated, our oncological surgery team uses laparoscopic and robotic techniques that allow highly precise procedures to be performed through a minimally invasive approach. These techniques are associated with reduced surgical trauma, faster functional recovery and fewer postoperative complications, while always maintaining the highest oncological quality standards.
In cases of locally advanced disease or peritoneal involvement, IVOQA also has a highly specialised unit for peritoneal carcinomatosis surgery, with access to complex procedures such as cytoreductive surgery, HIPEC, PIPAC and other locoregional therapies when indicated.
Structured physical exercise is part of colon cancer treatment following the results of the CHALLENGE Trial
A multidisciplinary committee for every patient
All cases are assessed by a Multidisciplinary Tumour Board, where oncological surgeons, medical oncologists, radiologists, pathologists, gastroenterologists, diagnostic imaging specialists, nutritionists and other professionals jointly review each clinical situation.
This care model makes it possible to design a fully individualised treatment plan based on the characteristics of the tumour, the molecular profile of the disease and the specific needs of each patient, ensuring that decisions are reached by consensus and based on the best available scientific evidence.
Research and innovation to improve outcomes
Research is part of clinical practice at IVOQA. Our institute actively participates in national and international clinical trials and develops projects aimed at incorporating new diagnostic and therapeutic strategies that provide patients with access to innovative treatments and continuously improve outcomes in colorectal oncology.
Prevention remains the best tool against colorectal cancer
Most colorectal cancers develop from precursor lesions that can be detected and treated before they progress. Therefore, participating in screening programmes, seeking medical advice when persistent digestive symptoms occur and attending check-ups when risk factors are present constitute the most effective strategy for reducing incidence and improving the prognosis of this disease.
At IVOQA, we offer patients a care model that integrates prevention, high-precision diagnosis, advanced oncological surgery, research and multidisciplinary care, with the aim of providing the most appropriate treatment at every stage of the disease.
Frequently asked questions about colon cancer in young adults
