What Is Asian Flush Syndrome? The Truth About ALDH2 Deficiency and Alcohol Sensitivity

Asian flush syndrome is a genetic condition that causes facial redness and other symptoms after alcohol consumption. It affects nearly 40 to 50% of East Asians, especially those from Chinese, Korean, and Japanese backgrounds.

This reaction is caused by an inherited deficiency in the ALDH2 enzyme, which prevents the full breakdown of alcohol in the body.

ALDH2 Deficiency: The Root Cause of Asian Flush Syndrome

When you drink alcohol, your body breaks it down into acetaldehyde, a toxic compound. Normally, the ALDH2 enzyme neutralises this compound into a harmless substance.

But in individuals with ALDH2 deficiency, acetaldehyde builds up quickly. This results in symptoms commonly called the Asian flush reaction, including:

  • Redness in the face
  • Skin warmth
  • Nausea
  • Heart palpitations
  • Headaches
  • Stuffy nose

Signs of Asian Alcohol Allergy or Alcohol Intolerance

Many refer to this as an “Asian alcohol allergy,” but technically, it’s not a true allergy. It’s an intolerance based on how your body metabolises alcohol.

Common signs include:

  • Flushed cheeks and neck
  • Sweating after minimal alcohol
  • Trouble breathing or congestion
  • Feeling lightheaded

Is Asian Flush Syndrome a Real Allergy?

No, Asian flush is not an allergic reaction in the traditional sense. It is a metabolic condition caused by an enzyme deficiency. However, the symptoms can mimic those of allergic reactions, making it confusing.

Understanding the root cause is essential in managing it safely and effectively.

Why Asian Flush Matters: Health Risks and Long-Term Impact

Research suggests that individuals with ALDH2 deficiency have a higher risk of certain cancers, especially in the esophagus. The increased acetaldehyde levels can also heighten the negative effects of alcohol over time.

Recognising this condition early and managing it with care is important for both comfort and health.

How iBlush Helps with Asian Flush Syndrome

iBlush is formulated for those with Asian flush or ALDH2 deficiency. It provides a layer of support to manage visible symptoms and reduce discomfort.

By supporting metabolic pathways, iBlush helps you:

  • Minimise red face after alcohol
  • Improve social confidence
  • Support healthy alcohol processing

Best Ways to Manage Alcohol Flush Reactions

Managing Asian flush involves both lifestyle and support tools. Here’s how to stay ahead:

Conclusion

Asian flush syndrome is not just a temporary redness. It’s a genetic signal that your body processes alcohol differently. With awareness and the right support, like iBlush, you can reduce symptoms and enjoy social experiences with more ease.

 

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