Weight Loss Concerns in Cancer Patients: Key Insights - Gastroenterology and Hepatology

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Regarding the issue of weight loss?


Dear doctors, if a person has cancer, will their weight continuously decrease? Is it possible that their weight never increases at all? Last November, I weighed 80 kilograms.
Recently, I have been eating a more balanced diet and have developed a habit of exercising, such as playing basketball and running.
A few months ago, my weight was still dropping, but since March, it has stabilized around 70 to 71 kilograms and has not decreased further.
Does this suggest that I might have cancer? During this period, I have experienced anxiety and significant stress, along with a good appetite.
I previously had blood in my stool, but after seeing a proctologist, I was diagnosed with a mild anal fissure, and I haven't had much bleeding since.
I also underwent basic tests, including blood tests, urinalysis, stool tests, and an abdominal ultrasound, all of which were normal.
However, due to my previous experience with blood in my stool and the sudden weight loss, I still opted for a colonoscopy.
What is the likelihood that I have cancer? Recently, after doing push-ups, I had dinner about 20 minutes later and soon after started experiencing abdominal pain and diarrhea, but the pain subsided after the diarrhea.
I haven't had much diarrhea since.
I am 24 years old.
Thank you, doctor, for your response.

Luo Kairen, 20~29 year old female. Ask Date: 2017/03/20

Dr. Cai Anshun reply Gastroenterology and Hepatology


Hello: If you are intentionally exercising and have lost weight as a result, there is no need to worry too much, especially since you have already undergone basic examinations, including blood tests, urine tests, stool tests, abdominal ultrasound, and colonoscopy.
Additionally, make sure that your eating time is not too close to your exercise time.
Changhua Hospital cares about your health.
Dr.
Tsai An-Shun.

Reply Date: 2017/03/20

More Info


When it comes to weight loss in cancer patients, it is important to understand that significant and unintentional weight loss can be a warning sign of underlying health issues, including cancer. However, not all weight loss is indicative of cancer, and there are many factors that can contribute to changes in body weight.

In your case, you mentioned that your weight has fluctuated between 70 to 71 kilograms after previously being at 80 kilograms. This kind of weight fluctuation can occur for various reasons, including changes in diet, exercise habits, stress levels, and overall health. It is also worth noting that weight loss does not always mean that a person has cancer. For instance, anxiety and stress can lead to changes in appetite and metabolism, which may contribute to weight loss.

According to medical guidelines, a weight loss of more than 5% of body weight over six months is often considered significant and may warrant further investigation. In your situation, while you have experienced weight loss, it seems to have stabilized recently, which is a positive sign. Additionally, the fact that you have undergone various medical tests, including blood tests, urine tests, and abdominal ultrasounds, all of which returned normal results, is reassuring. The presence of a minor anal fissure, as diagnosed by your doctor, is unlikely to be related to cancer.

Cancer-related weight loss is often accompanied by other symptoms, such as fatigue, pain, changes in appetite, and specific gastrointestinal symptoms, depending on the type of cancer. In many cases, cancer can lead to a condition known as cachexia, which is characterized by severe weight loss, muscle wasting, and a significant decline in overall health. However, this typically occurs in more advanced stages of cancer.

Regarding your concerns about the possibility of having cancer, it is essential to consider the entire clinical picture. You mentioned experiencing anxiety and stress, which can significantly affect your eating habits and overall well-being. It is also important to address any gastrointestinal symptoms you may have experienced, such as the recent abdominal pain and diarrhea. These symptoms can be related to various benign conditions, including dietary changes or stress-related gastrointestinal disturbances.

The decision to undergo a colonoscopy is a prudent one, especially given your previous experience with blood in your stool. This procedure can provide valuable information and help rule out any serious conditions, including colorectal cancer. It is crucial to follow through with this examination and discuss the results with your healthcare provider.

In summary, while weight loss can be a concerning symptom, it is not solely indicative of cancer. Your recent weight stabilization, normal test results, and the absence of other alarming symptoms suggest that you may not have cancer. However, it is essential to continue monitoring your health, maintain open communication with your healthcare provider, and address any ongoing concerns, including anxiety and stress management. If you notice any new or worsening symptoms, do not hesitate to seek medical advice.

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