Yes, several cancers are being diagnosed more often in adults under 50, and a large study from England found that rising excess weight explains only part of that increase. Cancer at this age is still uncommon, though, and most symptoms people worry about turn out to be something else. What matters is knowing which changes to get checked, and not letting your age talk you out of it.
This article explains what the research actually found, how it fits with trends in other countries and in India, and the early signs worth a doctor’s visit.
What the England study found
The study was published in BMJ Oncology in April 2026 by researchers at The Institute of Cancer Research, London and Imperial College London (first author Montserrat Garcia-Closas), and came back into the news this October. The team looked at national cancer registry data for England from 2001 to 2019, covering 22 cancer types in women and 21 in men, and compared adults aged 20 to 49 with those aged 50 and over. They then checked whether changes in smoking, alcohol, diet, body weight and physical activity could explain what they saw.
According to the published abstract:
- Eleven cancers with known lifestyle-related risk factors were rising in younger adults. These were bowel, breast, endometrial (womb lining), ovarian, kidney, liver, pancreatic, gallbladder, mouth and thyroid cancer, plus multiple myeloma (a blood cancer).
- Most of these were also rising in older adults. Bowel and ovarian cancer were the exceptions: they rose only in the under-50s.
- For some cancers, rates grew faster in younger adults than in older ones.
- Smoking, alcohol, diet and physical inactivity were stable or improving over the period. Obesity was the only risk factor that got worse.
The study is observational. It shows patterns in the population and can’t prove what caused them.
Why excess weight doesn’t explain all of it
Excess weight is linked to 10 of the 11 cancers (mouth cancer is the exception), and obesity has risen steadily in England since 1995, fastest in younger women. So it’s a real part of the story. But when the researchers split the rise into cases that could be put down to excess weight and cases that couldn’t, both went up.
Imperial College London’s summary gives an example from younger women with bowel cancer. Cases attributed to excess weight rose from 0.9 to 1.6 per 100,000, while cases not attributed to it rose from 6.4 to 9.6 per 100,000. In other words, most of the increase came from something other than body weight.
The authors suggest looking at factors they couldn’t measure well, such as metabolic changes, inflammation, the gut microbiome and exposures early in life. For now, nobody has a full answer.
Is the same thing happening in other countries?
England isn’t alone, though the pattern varies by country and cancer type.
- A new international analysis. In October 2026 the World Cancer Research Fund published early-onset cancer data from England, the US and the Netherlands for people under 50. Bowel and kidney cancer rose significantly in all three countries, and breast cancer rose in England and the US, while lung cancer fell in the US, the Netherlands and in men in England, which fits with fewer people smoking.
- Bowel cancer worldwide. A study in The Lancet Oncology led by the American Cancer Society found that early-onset colorectal cancer rose in 27 of 50 countries over the most recent decade of data, in adults aged 25 to 49.
What about India? In the same Lancet Oncology analysis, India had one of the lowest rates of early-onset colorectal cancer, about 4 per 100,000. We couldn’t find a published Indian registry analysis of under-50 trends that we could check, so we haven’t quoted one.
Keep the numbers in proportion
A rising trend from a low base is still a low number. The World Cancer Research Fund notes that cancer is still mostly a disease of people over 50, and the England study’s authors point out that the total burden of cancer remains far higher in older adults.
The NHS says most cancer warning symptoms are very common and can be caused by other conditions. Bleeding from the bottom, for example, is often caused by piles, and a cough after a cold can take a while to clear. The point of knowing the signs isn’t to frighten yourself. It’s so that a change that doesn’t settle gets looked at early, when treatment is usually easier.
Early signs worth getting checked
These are drawn from the NHS list of possible cancer symptoms. Any one of them on its own is more likely to be something minor, but see a doctor if it’s new for you, doesn’t go away, or keeps coming back.
| Area | What to look out for |
|---|---|
| Bowel | A change in your usual pattern (looser, more frequent, or constipation that’s unusual for you), blood in the stool, bleeding from the bottom, often feeling you still need to go, tummy pain or a lump |
| Breast or chest | A new lump or swelling in the breast, chest or armpit; skin dimpling; a change in shape; nipple turning inward, a rash, or discharge (when not pregnant or breastfeeding) |
| Whole body | Losing weight without trying, feeling far more tired than usual, unusual bruising or bleeding, heavy night sweats or a temperature that keeps coming back |
| Chest and voice | A cough or breathlessness that doesn’t improve or gets worse, coughing up blood, a hoarse voice that doesn’t get better |
| Mouth and throat | An ulcer that doesn’t heal, white or red patches in the mouth, difficulty swallowing. Get these checked promptly if you use tobacco, gutka or paan |
| Skin | A new mole, a mole that changes, or a sore that doesn’t heal |
| Stomach | Heartburn or indigestion that is frequent, very painful or getting worse; bloating that lasts |
| Women | Bleeding between periods, after sex or after menopause; unusual vaginal discharge |
| Urine | Needing to pass urine more often or urgently, pain when passing urine |
If you have piles and notice bleeding, our piece on why piles are becoming more common covers the usual causes. Still mention new or changed bleeding to a doctor rather than assuming. For breast changes, see our guide to breast cancer symptoms and precautions.
Don’t let “I’m too young” delay a check-up
Younger adults, and sometimes their doctors, are more likely to put symptoms down to stress, diet or piles. A few things help you get a proper answer:
- Note when the symptom started, how often it happens and whether it’s getting worse. A photo of a changing mole helps.
- Mention any family history of bowel, breast, ovarian or womb cancer, especially in a parent, brother or sister diagnosed young.
- If a symptom hasn’t settled after treatment, go back. Asking for a review or a referral is reasonable.
Cancer screening in India: what’s available
Under the National Health Mission, government health centres including Ayushman Arogya Mandirs offer screening for common non-communicable diseases to people aged 30 and above. Health ministry figures to October 2025 count screenings for oral, breast and cervical cancer under this programme. For cervical cancer, the ministry says women aged 30 to 65 are screened, mainly with a visual test using acetic acid (VIA), and anyone with a positive result is referred for further tests.
This programme covers oral, breast and cervical cancer, not bowel cancer. If you have bowel symptoms or a strong family history, ask your doctor which tests suit you instead of waiting for a screening invitation.
Risk factors you can change
The England study’s message is that known risk factors don’t explain the whole rise, but they still account for a large share of cancers. Imperial’s summary says that in 2019 they were linked to an estimated 40 to 50% of bowel, endometrial, mouth and liver cancer cases.
- Body weight. Steady, sustainable weight loss if you’re above a healthy range. Even regular brisk walking helps; see our guide to walking after meals.
- Tobacco in every form. Cigarettes, bidis, gutka, khaini and paan with tobacco all raise cancer risk, especially of the mouth.
- Alcohol. Less is better. Our article on how to stop drinking alcohol has practical steps.
- Diet. More fibre from whole grains, dal, vegetables and fruit; less red and processed meat. These were among the diet factors the England study tracked.
- Activity. Less time sitting, more time moving, every day.
When to see a doctor
Book an appointment for any symptom in the table above that is new, unexplained, or lasting longer than you’d expect.
Get seen urgently, the same day, if you have:
- Black or dark red stools, or bloody diarrhoea
- Coughing up blood
Call 112 or go to an emergency department if you’re bleeding non-stop from the bottom or passing a lot of blood or large clots. The NHS lists these as emergency signs.
Frequently asked questions
Should I be worried about cancer if I’m under 50?
Worry won’t help, but awareness will. Cancer is still uncommon at this age. Know the signs, keep risk factors in check, and get anything persistent examined.
Does this mean obesity causes cancer in young people?
Excess weight is linked to 10 of the 11 rising cancers in the England study and explains part of the increase. It doesn’t explain all of it, and the study couldn’t prove cause and effect.
Is blood in the stool always cancer?
No. It’s often caused by something like piles. It still needs checking, especially if it’s new, keeps happening or comes with a change in bowel habit.
Where can I get cancer screening in India?
If you’re 30 or older, you can ask at your nearest government health centre or Ayushman Arogya Mandir about screening for oral, breast and cervical cancer.
Are full-body scans a good way to check for cancer?
Not without a medical reason. Talk to a doctor about your symptoms and family history, and let them decide which tests make sense.
This article is for general information and is not a substitute for advice from a doctor. If you have symptoms or a health condition, please consult a qualified healthcare professional.