Feeling Dizzy and Heart Racing After Drinking: Possible Causes and Solutions

Feeling dizzy and experiencing a rapid heartbeat after drinking a beverage?

Hello, Doctor.
Recently, whenever I drink low-sugar milk tea or sugar-free beverages from bubble tea shops, I often experience dizziness and an increased heart rate after finishing the drink (my usual heart rate is around 68-80 bpm, but it jumps to at least 95 bpm after drinking).
This phenomenon has only occurred in the past year or two; I didn't experience it when I was younger.
I have undergone general health check-ups, thyroid tests, and electrocardiograms in the past two years, all of which showed no abnormalities.
I would like to ask the doctor what could be causing the dizziness and increased heart rate after drinking, and sometimes even slight hand tremors.
What conditions might this indicate, or what could be triggering it? Is there a way to alleviate these symptoms when they occur? Which specialty should I visit for further evaluation? Thank you.

A Niu, 20~29 year old female. Ask Date: 2022/02/25

Dr. Liao Yaopan reply Family Medicine

Hello, it's uncertain what beverage you are referring to.
If it contains caffeine, similar reactions may occur, which are related to the amount consumed and individual constitution.
Therefore, if you are concerned, it is advisable to refrain from drinking such beverages.
Online consultations are not equivalent to in-person medical visits and cannot provide diagnoses or treatment recommendations.
Changhua Hospital cares about your well-being.

Reply Date: 2022/02/25

More Info

Feeling dizzy and experiencing heart racing after consuming certain beverages can be concerning, especially when these symptoms have developed recently. Based on your description, it seems that you are experiencing a combination of palpitations (heart racing) and dizziness after drinking low-sugar milk tea or sugar-free drinks. Here are some possible causes and solutions to consider.

Possible Causes
1. Caffeine Sensitivity: Many hand-shaken drinks, even those labeled as low-sugar or sugar-free, can contain caffeine. Caffeine is a stimulant that can increase heart rate and cause feelings of anxiety or jitteriness, which may lead to dizziness. If you have developed a sensitivity to caffeine over the years, this could explain your symptoms.

2. Blood Sugar Fluctuations: Even low-sugar drinks can cause fluctuations in blood sugar levels, especially if consumed on an empty stomach or if they contain certain artificial sweeteners. Rapid changes in blood sugar can lead to symptoms like dizziness and increased heart rate.

3. Dehydration: If you are not drinking enough water throughout the day, consuming beverages that are not hydrating (like caffeinated drinks) can lead to dehydration, which can cause dizziness and increased heart rate.

4. Anxiety or Panic Attacks: If you are feeling anxious about your health or the symptoms you are experiencing, this can lead to a cycle of increased heart rate and dizziness. Anxiety can manifest physically in various ways, including palpitations and dizziness.

5. Autonomic Nervous System Dysfunction: As mentioned in previous discussions, issues with the autonomic nervous system can lead to symptoms like heart palpitations and dizziness. This could be exacerbated by stress, lack of sleep, or dietary choices.

Solutions and Recommendations
1. Monitor Caffeine Intake: Keep track of how much caffeine you are consuming daily. If you suspect that caffeine is the culprit, consider reducing your intake or switching to caffeine-free alternatives.

2. Stay Hydrated: Ensure you are drinking enough water throughout the day. Dehydration can exacerbate feelings of dizziness and heart racing.

3. Balanced Diet: Pay attention to your overall diet. Eating regular meals that include a balance of carbohydrates, proteins, and fats can help stabilize blood sugar levels and prevent dizziness.

4. Relaxation Techniques: If anxiety is a factor, consider practicing relaxation techniques such as deep breathing, meditation, or yoga. These can help calm your nervous system and may alleviate symptoms.

5. Consult a Specialist: Since you have already undergone general health checks, it may be beneficial to consult a cardiologist or a neurologist. They can perform more specialized tests, such as a 24-hour Holter monitor, to assess your heart's activity over a longer period and determine if there are any underlying issues.

6. Keep a Symptom Diary: Document when your symptoms occur, what you ate or drank prior, and any other relevant factors (like stress levels or sleep quality). This information can be very helpful for your healthcare provider in diagnosing the issue.

Conclusion
While your symptoms can be distressing, they are often manageable with lifestyle adjustments and proper medical guidance. It is essential to listen to your body and seek professional help if symptoms persist or worsen. By addressing potential dietary triggers, staying hydrated, and managing stress, you may find relief from the dizziness and heart racing you are experiencing. Always consult with a healthcare professional for personalized advice and treatment options tailored to your specific situation.

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