Loss of appetite is something most people experience at some point. It can happen when you feel stressed, tired, or unwell. Often, it’s temporary and will resolve on its own. However, if a reduced appetite lasts for days or weeks, or if it comes with other symptoms like weight loss or stomach pain, it might mean that something more serious is wrong.
Understanding the causes, warning signs, and available treatments can help you take action and protect your health. This article explains when loss of appetite is a concern, what symptoms to watch for, and what steps you can take. This includes when to see a gastroenterologist, like Dr Fernandes Mark Lee, for a proper medical evaluation.
What Is Loss of Appetite?
Loss of appetite, or a decreased interest in eating, can happen suddenly or gradually. Some people may feel full quickly, while others may have no desire to eat at all. This can lead to lower food intake, reduced energy levels, and unintentional weight loss.
Occasional changes in appetite are normal. But if you lose your appetite for days or weeks, it’s important to pay attention, especially if it affects your daily routine, mood, or physical health.
Common Causes of Loss of Appetite
Many factors can trigger loss of appetite. Some are mild and temporary, while others might suggest a deeper medical issue.
- Gastrointestinal Conditions
Many stomach and digestive issues can affect appetite, including:
– Gastritis
– Acid reflux (GERD)
– Peptic ulcers
– Irritable bowel syndrome (IBS)
– Gut infections
– Food intolerances
When your digestive system is irritated or inflamed, your body will naturally reduce food intake to avoid discomfort. If symptoms persist, it’s important to get them checked early.
- Viral or Bacterial Infections
Flu, dengue fever, stomach flu, and common viral illnesses can often reduce appetite. Usually, this improves as the infection clears. But if your appetite doesn’t return after recovery, it might indicate an underlying issue.
- Chronic Conditions
Certain long-term health conditions can also lead to a lasting loss of appetite:
– Diabetes
– Thyroid disorders
– Kidney disease
– Liver disease
– Cancer
– Autoimmune disorders
These illnesses can affect metabolism, digestion, or hormone regulation.
- Medications
Some medications can interfere with appetite, including:
– Antibiotics
– Pain medication
– Chemotherapy drugs
– Antidepressants
If you notice a loss of appetite after starting a new medication, talk to your doctor or pharmacist.
- Mental Health Factors
Stress, depression, anxiety, and burnout are increasingly common in Singapore’s fast-paced work environment. These mental health issues can greatly impact eating habits.
People under emotional stress may skip meals without realising it, or they may simply lose interest in food.
- Ageing and Lifestyle Factors
Older adults often experience reduced appetite due to slower digestion, hormonal changes, or less physical activity. Busy schedules, irregular eating patterns, lack of sleep, or high caffeine intake can also affect appetite in younger people.
When Should You Worry About Loss of Appetite?
While occasional appetite loss is normal, you should take notice when it becomes persistent or is accompanied by certain warning signs.
See a doctor if loss of appetite lasts more than:
– 3 days with no improvement, or
– 1 week with mild symptoms, or
– 2 weeks with no other symptoms
However, if any of the following signs appear, seek medical help immediately.
Warning Signs That Require Medical Attention
- Unintentional Weight Loss
Losing more than 5% of your body weight within a few weeks or months is a warning sign. Sudden weight loss may indicate digestive disorders, metabolic issues, or even early signs of more serious conditions.
- Ongoing Abdominal Pain or Discomfort
Persistent stomach pain, bloating, nausea, early satiety (feeling full too quickly), or changes in bowel habits should not be ignored.
These symptoms may suggest gastritis, ulcers, inflammatory bowel conditions, or gallbladder problems.
- Difficulty Swallowing
If you feel pain, choking, or tightness when swallowing food, see a gastroenterologist. This could indicate a problem with your oesophagus.
- Vomiting or Persistent Nausea
Frequent vomiting or nausea lasting more than 48 hours can cause dehydration and electrolyte imbalance. This needs immediate evaluation.
- Fever or Severe Fatigue
When appetite loss is paired with fever, weakness, or extreme tiredness, it may indicate infection, inflammation, or chronic illness that needs prompt attention.
Effective Treatments for Loss of Appetite
Treatment depends on the underlying cause. Common approaches include:
- Treating GI Conditions
If a digestive disorder is found, treatment may involve:
– Acid-reducing medication
– Antibiotics for infections
– Anti-inflammatory drugs
– Special diets
Restoring digestive comfort often helps improve appetite naturally.
- Addressing Mental and Emotional Health
If stress or emotional issues are the cause, counselling, mindfulness practices, lifestyle changes, or support from a mental health professional may help.
- Adjusting Medications
If a medication is affecting your appetite, your doctor may alter the dosage or recommend alternatives.
- Nutrition Support
For those struggling to meet daily nutritional needs:
– Small, frequent meals
– High-calorie nutritional drinks
– Easily digestible foods
– Hydration strategies
These can help support recovery while your appetite gradually returns.
- Specialist Care
If symptoms continue, worsen, or show warning signs, seeing a gastroenterologist is crucial. Specialists like Dr. Fernandes Mark Lee can identify hidden digestive issues early and suggest targeted treatment to avoid complications.
When You Should See a Gastroenterologist
Consider seeing a gastroenterologist if:
– Appetite loss lasts more than 1-2 weeks
– You have unexplained weight loss
– You experience persistent abdominal pain or discomfort
– Symptoms affect your daily life or work performance
– You have existing digestive conditions
– You see bleeding or significant changes in bowel habits
A timely consultation can prevent long-term digestive problems and ensure proper treatment.
Conclusion
Loss of appetite might seem harmless at first, but it may be your body’s early warning sign. Whether it’s digestive issues, stress, infection, or chronic illness, ignoring the symptoms can result in complications.
If your appetite doesn’t return within a week, or if you notice troubling symptoms, seek professional guidance. Consulting a gastroenterologist, such as Dr Fernandes Mark Lee, can help you find the cause and get the right treatment before the condition worsens.