Why Am I Gaining Weight Despite My Diet and Exercise Efforts? - Internal Medicine

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Why do I keep gaining weight despite trying to lose it?


I am 166 cm tall and weigh 63 kg.
Since starting my regular weight loss plan a week ago, I have noticed that my weight has not only failed to decrease but has actually increased.
I am currently not working and attend night classes, waking up around noon for regular meals and not eating after 6 PM.
I go to the gym every day and drink plenty of water, yet my weight has gone up.
I am concerned that I might have a tumor.
I have always had a habit of exercising and have never experienced gaining weight while trying to lose it.
I am unsure what is happening with my body.

Kongque Yu, 20~29 year old female. Ask Date: 2005/06/04

Dr. Zhao Chongliang reply Internal Medicine


Hello! If tumors grow within the body, their unlimited growth can deprive normal cells of nutrients, causing weight loss rather than weight gain.
There are many causes of obesity; in addition to diet and exercise, the medical community has identified at least six genes associated with obesity.
Additionally, some genes do not directly cause obesity but influence the metabolism of fat and glucose in the body, leading individuals to feel unsatisfied even after consuming excess nutrients, which can also contribute to obesity.
You are already engaging in moderate exercise, but I am unsure about the specifics of your weight loss plan.
If the foods you consume are low in quantity but high in fat or glucose, or if you are consuming excessive amounts of foods you believe to be free of these two nutrients, it could lead to weight gain despite your efforts to lose weight.

Reply Date: 2005/06/04

More Info


Gaining weight despite a diligent diet and exercise routine can be frustrating and confusing. There are several factors that could contribute to this phenomenon, and understanding them can help you address the issue more effectively.

First, it's essential to consider the nature of weight fluctuations. Weight can vary from day to day due to several factors, including water retention, hormonal changes, and even the timing of meals. For instance, if you have recently started a new exercise regimen, your body may retain water as it repairs muscles, leading to temporary weight gain. This is particularly common when engaging in strength training or high-intensity workouts, as your muscles can hold onto water to aid in recovery.

Second, the composition of your diet plays a crucial role. Even if you are consuming fewer calories, the types of foods you eat can significantly impact your weight. For example, a diet high in carbohydrates, especially refined carbs and sugars, can lead to increased water retention and may not promote fat loss effectively. It's important to focus on a balanced diet that includes adequate protein, healthy fats, and a variety of fruits and vegetables. Protein is particularly important as it helps build and repair muscle, which can increase your metabolic rate.

Additionally, the timing of your meals can influence your weight. While you mentioned that you do not eat after 6 PM, it's essential to ensure that your overall caloric intake aligns with your energy expenditure throughout the day. If you consume a large meal during your eating window, it may still lead to a caloric surplus, resulting in weight gain.

Another factor to consider is your body's metabolic rate. If you have been on a restrictive diet for an extended period, your metabolism may slow down as your body adapts to lower caloric intake. This is often referred to as "metabolic adaptation." To combat this, it's crucial to incorporate a variety of foods into your diet and ensure you are consuming enough calories to support your activity level.

Stress and sleep quality can also impact weight management. High stress levels can lead to hormonal imbalances, particularly with cortisol, which is associated with weight gain, especially around the abdominal area. Additionally, inadequate sleep can disrupt hunger hormones, leading to increased appetite and cravings for unhealthy foods.

If you suspect that there may be an underlying health issue, such as hormonal imbalances or metabolic disorders, it would be wise to consult with a healthcare professional. Conditions like hypothyroidism or polycystic ovary syndrome (PCOS) can affect weight and metabolism, making it more challenging to lose weight despite diet and exercise efforts.

In summary, if you are experiencing weight gain despite your efforts, consider the following steps:
1. Evaluate Your Diet: Ensure you are consuming a balanced diet rich in whole foods, adequate protein, and healthy fats. Monitor your carbohydrate intake, particularly refined sugars.

2. Monitor Portion Sizes: Even healthy foods can contribute to weight gain if consumed in large quantities. Pay attention to portion sizes and overall caloric intake.

3. Stay Hydrated: While drinking water is essential, be mindful of sodium intake, which can lead to water retention.

4. Incorporate Strength Training: Building muscle can help increase your metabolic rate, aiding in weight loss.

5. Manage Stress and Sleep: Prioritize stress management techniques and ensure you are getting enough restorative sleep.

6. Consult a Professional: If weight gain persists, consider consulting a healthcare provider or a registered dietitian to rule out any underlying health issues and to receive personalized guidance.

By addressing these factors, you can create a more effective weight management strategy that aligns with your goals. Remember, weight loss is often not a linear process, and patience is key.

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