How Many Calories Should I Consume as a Sedentary Exam Taker? - Family Medicine

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How many calories should I consume in a day?


Hello, Doctor! I am currently 158 cm tall, weigh 62 kg, and have a body fat percentage of 35%.
My daily activity mostly involves sitting (as I am preparing for a national exam).
Besides walking my dog for about 10-20 minutes, I do not engage in any other activities.
I have been taking Normetrexone for a week, and during this medication period, my diet has been around 900-1200 calories without any special exercise.
I have lost weight from 63.4 kg to 62.0 kg.
I would like to ask you:
1.
Given my situation, how many calories should I be consuming?
2.
I did not take Normetrexone today because I felt unusually depressed and fatigued yesterday.
I am unsure of the reason for this.
3.
Lastly, I would like to ask you about a concern I have.
I often find myself unconsciously stopping my breath, and when I realize it, I understand that it is caused by stress.
In such situations, I immediately take several deep breaths, but it feels somewhat unnatural.
Is this considered normal? Thank you.

Ling, 20~29 year old female. Ask Date: 2005/03/15

Dr. Huang Jianling reply Family Medicine


Your ideal body weight (BMI: 18.5-24) is approximately 46-60 kg.
It is recommended that your daily caloric intake be between 1370-1650 calories, and that you maintain regular meal times with appropriate portion sizes.
Your feelings of depression and fatigue may be due to insufficient caloric intake or the effects of weight loss medication.
Lack of exercise can also lead to overall weakness, and combined with exam stress, it can easily trigger symptoms of tension and anxiety such as insomnia, rapid heartbeat, shortness of breath, muscle tension, and elevated blood pressure, all of which are related to sympathetic nervous system activation.
Therefore, it is advised to discontinue the weight loss medication Nometine, increase your physical activity (aim for 20 minutes of sweating exercise daily), reduce snack consumption, ensure adequate rest, and manage academic pressure.
Sincerely, Dr.
Huang Jianling.

Reply Date: 2005/03/15

More Info


To determine how many calories you should consume as a sedentary exam taker, we need to consider several factors, including your height, weight, body fat percentage, and activity level. Based on the information you've provided—158 cm tall, weighing 62 kg, and having a body fat percentage of 35%—we can estimate your caloric needs.

1. Caloric Needs: For a sedentary lifestyle, the estimated daily caloric intake can be calculated using the Mifflin-St Jeor equation, which is a commonly used method to estimate basal metabolic rate (BMR). The BMR is then multiplied by an activity factor to determine total daily energy expenditure (TDEE).

- Mifflin-St Jeor Equation for Women:
\[
BMR = 10 \times \text{weight (kg)} + 6.25 \times \text{height (cm)} - 5 \times \text{age (years)} - 161
\]
- Assuming you are around 25 years old (please adjust according to your actual age), your BMR would be approximately:
\[
BMR = 10 \times 62 + 6.25 \times 158 - 5 \times 25 - 161 \approx 1,300 \text{ calories/day}
\]
- For a sedentary lifestyle, multiply the BMR by 1.2:
\[
TDEE \approx 1,300 \times 1.2 \approx 1,560 \text{ calories/day}
\]
Therefore, you should aim for around 1,500 to 1,600 calories per day to maintain your current weight. If you are looking to lose weight, a deficit of 500 calories per day is generally recommended, leading to a target of about 1,000 to 1,100 calories per day. However, consuming fewer than 1,200 calories daily can be unhealthy and may not provide sufficient nutrients.

2. Mood and Medication: You mentioned feeling exceptionally depressed and fatigued after stopping your medication (Nometine). It's important to understand that medications for mood disorders can have withdrawal effects or may require time to stabilize your mood. If you are feeling unusually low, it may be beneficial to consult your healthcare provider about your symptoms and the possibility of adjusting your medication or exploring other therapeutic options.

3. Breathing and Stress: The experience of unconsciously stopping your breath and then needing to take deep breaths can be a common response to stress and anxiety. This phenomenon is often linked to the body's fight-or-flight response, where stress can lead to shallow breathing or breath-holding. While it is normal to experience this occasionally, if it becomes frequent or bothersome, it may be helpful to practice relaxation techniques such as mindfulness, meditation, or yoga. These practices can help you become more aware of your breathing patterns and promote a sense of calm.

In summary, aim for a caloric intake of around 1,500 to 1,600 calories per day for maintenance, and consider a slight deficit if weight loss is your goal. Monitor your mood closely, especially when adjusting medications, and don't hesitate to reach out to your healthcare provider for support. Lastly, practicing stress management techniques can help alleviate the symptoms of anxiety and improve your overall well-being.

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