Why You're Not Gaining Weight Despite Eating Well - Nutrition

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Weight gain..?


I am too thin, but I eat a lot of snacks and late-night meals.
However, I don't have much appetite for my three main meals; I usually don't feel hungry for breakfast.
What could be the reason for my lack of appetite for three meals? Also, it seems that my body type doesn't allow me to gain weight.
Since high school until now, I have maintained a weight of 55 kg after graduating from a two-year program.
Is this due to gastrointestinal issues? What kind of tests should I undergo?

Xiao Wei, 20~29 year old female. Ask Date: 2002/09/23

Dr. Shi Guimei reply Nutrition


Hello, Xiao Wei: Your question did not mention your height, so I cannot determine if your body type is too thin.
However, you can calculate your ideal weight using the following formula: 22 * height * height, where height is in meters.
For example, if your height is 160 cm, the ideal weight would be 22 * 1.6 * 1.6.
If your actual weight is within "plus or minus 10%" of the ideal weight, it falls within the ideal range.
If you are unable to eat three main meals, it may be due to excessive snacking, which can diminish your appetite for regular meals.
Additionally, if the snacks you consume are empty-calorie foods (high in calories but low in nutrients, such as soda, cola, various sugary drinks, candies, desserts, etc.), this can lead to malnutrition over time.
You might try to avoid snacks as much as possible and increase your physical activity; this should help improve your appetite during meal times.
If you still feel hungry outside of meal times, you can opt to drink milk (1 to 2 cups a day, with each cup being 240 cc).
I suggest you try this for one month, and if there is still no improvement in your weight, you could keep a food diary for three days for further discussion.
Wishing you and your family peace and happiness.
Sincerely, Dietitian Shih Kuei-Mei, Director of the Nutrition Department, Taoyuan Hospital, Ministry of Health and Welfare.

Reply Date: 2002/09/23

More Info


It sounds like you're experiencing a challenging situation regarding your weight and appetite. Despite consuming a significant amount of snacks and late-night meals, you find it difficult to gain weight and often lack appetite for your main meals. This can be frustrating, especially when you feel like you're doing everything right in terms of eating.

There are several potential reasons for your situation, and understanding them can help you take appropriate steps to address your concerns.

1. Metabolism: Some individuals naturally have a higher metabolic rate, which means they burn calories more quickly than others. This can be influenced by genetics, muscle mass, and overall activity level. If you have a fast metabolism, it may be challenging to gain weight even if you eat a lot.

2. Appetite Regulation: Your body has complex mechanisms that regulate hunger and satiety. If you're frequently snacking, especially on high-calorie foods, your body may not signal hunger for regular meals. This can lead to a cycle where you feel less inclined to eat three substantial meals a day.

3. Gastrointestinal Issues: You mentioned that you might have a "bad stomach." Gastrointestinal issues, such as gastritis, irritable bowel syndrome (IBS), or food intolerances, can affect your appetite and how your body processes food. If you experience discomfort, bloating, or other digestive symptoms, it could be impacting your desire to eat.

4. Psychological Factors: Stress, anxiety, or depression can also affect appetite. If you're feeling overwhelmed or anxious, it might manifest as a reduced desire to eat regular meals. It's essential to consider your mental health and how it might be influencing your eating habits.

5. Nutritional Deficiencies: Sometimes, a lack of certain nutrients can lead to decreased appetite. For example, deficiencies in vitamins and minerals such as zinc or vitamin B12 can affect your sense of taste and appetite.

Recommendations:
1. Consult a Healthcare Professional: Given your concerns about your weight and appetite, it would be beneficial to consult with a healthcare provider or a registered dietitian. They can help assess your overall health, conduct necessary tests, and provide personalized recommendations.

2. Keep a Food Diary: Tracking what you eat, including portion sizes and how you feel after meals, can help identify patterns in your eating habits. This information can be valuable for healthcare professionals when assessing your situation.

3. Focus on Nutrient-Dense Foods: Since you may struggle with appetite, try to make your meals more calorie-dense and nutritious. Incorporate healthy fats (like avocados, nuts, and olive oil), protein-rich foods (like eggs, lean meats, and legumes), and whole grains into your meals. Smoothies can also be a great way to pack in calories and nutrients without feeling overly full.

4. Regular Meal Schedule: Establishing a routine for meals can help stimulate your appetite. Even if you don't feel hungry, try to eat small meals or snacks at regular intervals throughout the day.

5. Hydration: Sometimes, drinking too much water before meals can reduce appetite. Try to drink fluids between meals rather than during them to help maintain your appetite.

6. Physical Activity: Engaging in regular physical activity can help stimulate appetite. Consider incorporating strength training or other forms of exercise that you enjoy.

7. Mental Health Support: If you suspect that psychological factors may be affecting your appetite, consider speaking with a mental health professional. They can provide support and strategies to manage stress or anxiety.

In summary, there are various factors that could be contributing to your difficulty in gaining weight despite eating well. By consulting with healthcare professionals and making some dietary adjustments, you can work towards a healthier weight and improved appetite.

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