Can drinking sugary soda make hyperhidrosis worse?

Hello. I am Dr. Hwang Sang-cheol, a specialist in the research and treatment of the autonomic nervous system.

When talking with people who have hyperhidrosis, there’s one topic that comes up surprisingly often.

“It’s not even that hot, but I suddenly start sweating profusely.”
“I seem to sweat even more after eating.”
“Strangely, when I drink something sweet, I get cold sweats.”

Of course, not all sweating is caused by beverages. However, for some people, the habit of frequently drinking high-sugar beveragescan trigger or exacerbate sweating through changes in blood sugar levels and sympathetic nervous system responses.

Today, I’ll try to explain the reason behind this in a way that’s a little easier to understand.

What happens to your body when you drink a sugary soda?

Because beverages high in sugar—such as cola and other carbonated drinks—are in liquid form, it is easy to consume large amounts of sugar in a short period of time.

In particular, drinking a sugary beverage quickly on an empty stomach can cause blood sugar levels to rise relatively quickly.

In response, our bodies secrete insulin to regulate the rise in blood sugar .

Insulin helps glucose in the blood move into cells, thereby lowering blood sugar levels.

However, in some people, symptoms similar to hypoglycemia or reactive hypoglycemia may occur as blood sugar levels rise rapidly after eating or drinking and then drop rapidly again .

At this point, our bodies secrete various hormones to raise our blood sugar levels again.

Typically, reactions associated with the sympathetic nervous system, such as the release of adrenaline, may occur.

Why do I sweat when my blood sugar drops?

This is where the connection to hyperhidrosis comes in.

Our bodies perceive a situation where blood sugar levels drop too low as an emergency and take action to raise blood sugar levels again.

As the sympathetic nervous system becomes activated during this process,

• My heart is pounding
• My hands are shaking.
• I suddenly feel nervous.
• I’m breaking out in a cold sweat.
• I feel anxious or restless.

Symptoms such as these may occur.

In particular, people who are already sensitive to stimulation of the sympathetic nervous system may experience these reactions more intensely.

So, if you find that “drinking a sugary beverage doesn’t make you feel more energetic but instead causes you to break out in a cold sweat,” or “you suddenly start sweating shortly after drinking a sugary beverage,” rather than assuming it’s simply a problem with your sweat glands, you should consider whether these symptoms might be related to fluctuations in blood sugar and an autonomic nervous system response.

However, this does not apply equally to all patients with hyperhidrosis. Whether hypoglycemia is actually present must be confirmed by measuring blood glucose levels when symptoms occur; one should not assume that reactive hypoglycemia is present simply because the patient is sweating.

If you have hyperhidrosis, be especially careful with these drinks.

One example worth paying special attention to is carbonated beverages, which are high in sugar.

Not only carbonated beverages such as cola and soda, but also sweetened energy drinks, sugary coffee, some fruit drinks, and beverage-style desserts can contain significant amounts of sugar.

The problem is that it’s much easier to consume large amounts of beverages than food.

For example, if you have a sweet drink with a meal, a sweet coffee in the afternoon, and an energy drink after exercising or going out—and this pattern repeats throughout the day—you may end up consuming more sugar than you realize.

Also, people with hyperhidrosis should consider whether these small triggers, when repeated, might actually make it easier for “situations that cause sweating” to occur.

If you find yourself thinking, “I start sweating whenever I drink soda,” make a note of it.

One of the most important things when managing hyperhidrosis is to observe when your sweating becomes more severe.

Instead of simply thinking, “I sweat a lot,” try writing it down like this.

① What did you eat?
② How much did you eat?
③ Were you on an empty stomach?
④ How many hours after eating did you start sweating?
⑤ Where did you sweat?
⑥ Did you experience any accompanying symptoms, such as a racing heart or trembling hands?

When you keep track of things like this, you may be surprised to find your own patterns emerging.

For example, you might find that you’re fine most of the time, but on days when you drink a sugary beverage on an empty stomach, your hands sweat excessively, or you might repeatedly experience a pattern where sweating suddenly breaks out on your face and headafter drinking a sugary beverage following a meal.

In such cases, rather than simply focusing on “preventing sweating,” it may be helpful to examine why the autonomic nervous system response intensifies in certain situations.

If I have hyperhidrosis, do I absolutely have to stop drinking sugary drinks?

You don’t have to be so definitive about it.

This is because hyperhidrosis is not a condition that can be explained by a single cause.

Various factors—such as body temperature, stress and tension, sleep, caffeine, alcohol consumption, hormonal changes, fluctuations in blood sugar, medications, and autonomic nervous system responsiveness—can affect sweating.

Therefore , rather than assuming that “this food definitely causes hyperhidrosis,” it isimportant to identify which foods and situations trigger a stronger sweating response in you.

In particular, if you repeatedly experience cold sweats, palpitations, tremors, or dizziness after drinking a sugary beverage, you should not assume it is simply hyperhidrosis; instead, it is advisable to consult a healthcare professional if necessary to check for blood sugar-related issues.

What You Should Consider Before Trying to Reduce Sweating

When you suffer from severe hyperhidrosis, the first thing that comes to mind is, “How can I stop sweating?”

However, sweating is also a physiological response necessary for regulating our body temperature.

Therefore, rather than simply aiming to suppress sweating at all costs, it is important to examine why your body sweats excessively in certain situations.

In particular, if you tend to be highly stressed, have irregular sleep patterns, frequently consume caffeine or sugary drinks, and experience heart palpitations or hot flashes even from minor stimuli, you should take a closer look at both your lifestyle habits and the state of your autonomic nervous system.

Ultimately, the key to managing hyperhidrosis is not just focusing on the end result—sweating—but also examining the situations that trigger increased sweating and the body’s response to them.

If I were to change just one thing starting today…

If you usually drink a lot of sugary sodas or other sweetened beverages, rather than quitting them all at once , try cutting back on your intake for about 1 to 2 weeks and see if there are any changes in your sweat.

In particular, if you have a habit of quickly drinking sugary beverages on an empty stomach, try switching to water or unsweetened beverages.

Also, if you experience recurring symptoms such as palpitations, tremors, or dizziness—in addition to sweating—after drinking a sugary beverage, you shouldn’t just brush it off by thinking, “I guess I just have severe hyperhidrosis.”

This is because sweat can be a signal from the body.

If you’ve always thought that excessive sweating was simply due to your body type or the heat, try taking a moment toobserve what you’ve eaten, when, and under what circumstances your sweating becomes more severe.

Understanding the pattern of my hyperhidrosis can begin with simply paying attention to a single small daily habit.

📌 If you’re wondering about your hyperhidrosis right now

“Which type of hyperhidrosis do I have?”

If you’re curious, start bychecking out the 1-minute hyperhidrosis self-checklistbelow.
Start byanswering a few questions to assess where and when you sweat, as well as your daily habits.

👉 Click the checklist below to find out what type of hyperhidrosis you have right now.