Thyroid Issues: Weight Gain and Management Tips - Internal Medicine

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I would like to inquire about thyroid issues?


I was diagnosed with thyroid issues this year.
Initially, I had hyperthyroidism, which was controlled with medication, but now it has turned into hypothyroidism.
When I had hyperthyroidism, I lost a lot of weight, but now that it has shifted to hypothyroidism, I have gained weight, which is really hard for me to accept.
In a short period of treatment for my thyroid, I have gained 8 kilograms, and I am shocked by how much weight I have gained.
I exercise for about 40 minutes every day and try not to overeat.
Currently, I have gained 5 kilograms.

I would like to ask if thyroid issues can make a person more prone to gaining weight? What can I do to prevent further weight gain? Should I control my diet? Can I still drink tea, like red tea, while taking my thyroid medication? Will tea affect the medication's efficacy? Should I wait a few hours after taking my medication before drinking tea? If my thyroid condition improves and I stop taking the medication, will I return to my previous weight?
Right now, I take my medication once a day: one is a pink pill, propranolol 10 mg, and the other is a yellow pill, carbimazole 10 mg.
Taking these two medications has significantly lowered my hyperthyroid levels, but I am really worried about my weight.
I had worked hard to lose weight before, and now because of hyperthyroidism, I have gained it back, which is very difficult for me to accept.
I have many questions.
Thank you for your hard work in answering them.

Xiao Ruo, 20~29 year old female. Ask Date: 2010/04/17

Dr. Yang Hongzhi reply Internal Medicine


Weight gain after treatment for hyperthyroidism is common and typically stabilizes at a certain point.
Controlling lifestyle and diet can help reduce the extent of weight gain.
The timing of medication related to hyperthyroidism has little impact on this.

Reply Date: 2010/04/17

More Info


Understanding thyroid issues, particularly in relation to weight management, can be quite complex. The thyroid gland plays a crucial role in regulating metabolism, and any dysfunction can lead to significant changes in weight. In your case, transitioning from hyperthyroidism (overactive thyroid) to hypothyroidism (underactive thyroid) can indeed result in weight gain, as you have experienced.

When your thyroid was overactive, your metabolism was accelerated, which often leads to weight loss. However, once the thyroid function normalizes or becomes underactive, your metabolism slows down, making it easier to gain weight. This is a common scenario for individuals undergoing treatment for thyroid disorders, and it can be frustrating, especially if you have worked hard to achieve a healthy weight previously.

To address your concerns about weight gain and management, here are some strategies that may help:
1. Dietary Adjustments: While you mentioned that you are trying to control your diet, it is essential to focus on a balanced intake of nutrients. Incorporate plenty of fruits, vegetables, whole grains, and lean proteins. Monitoring portion sizes and avoiding high-calorie, low-nutrient foods can also be beneficial. Since you are concerned about your weight, consider consulting a registered dietitian who can help create a personalized meal plan that aligns with your health goals.

2. Regular Exercise: You are already exercising for about 40 minutes daily, which is excellent. Aim for a mix of cardiovascular exercises (like walking, running, or cycling) and strength training. Strength training is particularly important as it helps build muscle mass, which can boost your metabolism even when at rest.

3. Medication Management: You are currently taking propranolol and carbimazole. Propranolol is often used to manage symptoms of hyperthyroidism, while carbimazole helps reduce thyroid hormone production. It’s important to take these medications as prescribed and discuss any concerns with your healthcare provider. Regarding your question about drinking tea, it’s generally advisable to take your thyroid medication on an empty stomach and wait at least 30-60 minutes before consuming anything else, including tea, to ensure optimal absorption.

4. Monitoring Thyroid Levels: Regular follow-ups with your healthcare provider to monitor your thyroid hormone levels (T3, T4, and TSH) are crucial. If your thyroid levels stabilize, you may find that your weight also stabilizes. If you are considering stopping medication, it is vital to do so under medical supervision, as abrupt changes can lead to fluctuations in your thyroid function and, consequently, your weight.

5. Stress Management: Stress can significantly impact weight and overall health. Consider incorporating stress-reducing activities into your routine, such as yoga, meditation, or deep-breathing exercises. Quality sleep is also essential for weight management and hormonal balance, so aim for 7-9 hours of sleep per night.

6. Understanding Weight Fluctuations: It’s important to recognize that weight management is not always linear. Factors such as water retention, muscle gain, and hormonal changes can affect your weight. Be patient with yourself and focus on overall health rather than just the number on the scale.

In summary, managing weight with thyroid issues requires a multifaceted approach that includes dietary changes, regular exercise, medication adherence, and stress management. It’s essential to work closely with your healthcare team to monitor your thyroid function and adjust your treatment plan as necessary. Remember, achieving a healthy weight is a journey, and it’s important to be kind to yourself along the way.

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