Poor diet, lack of exercise and smoking are all plausible explanations , but obesity is one risk factor that is much more common now
Dear Dr. Roach: I read in the paper that the rate of colorectal cancer has been rapidly rising since the 1990s among adults younger than 50. I also read that younger people are dying from the disease. Can you shed any light on why this is happening?You are right. The risk of developing colon cancer at a young age is double for those born in the 1980s and 1990s compared with those born in the 1950s. Nobody knows exactly why this is, but there are some hypotheses.
The most common symptoms and signs of colon cancer in younger people are similar to those found in middle-aged and older people: colonic bleeding ; abdominal pain; diarrhea; and iron- deficiency anemia. People of any age with these persistent symptoms should speak to their regular doctors, who can refer them for testing, if appropriate.
Dear Dr. Roach: I am a 75-year-old man and had been seeing the same doctor for over 45 years. But he sold his practice, and the new doctor diagnosed me with pernicious anemia after my first blood test. My grandfather was born in Germany and the doctor thought that this was a contributing factor. People with PA can sometimes have dangerously low B12 levels but don’t have anemia. Very low B12 levels can cause depression, difficulty thinking and sensation changes, since B12 is needed for proper nerve-cell function.
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