Why the Maximum Realistic Survival Rate Is 50%**

Fat-grafting breast augmentation is one of the most beautiful and natural techniques in modern aesthetic surgery. It creates soft, seamless results that look and feel like your own body.

However, one key element is often misunderstood:

How much fat will actually survive?

To give you the most accurate and medically sound expectation:

Even under ideal conditions, the fat survival rate is around 30–50%.

This is a global standard based on established scientific evidence.

❌ “80% survival” is NOT medically possible

In some advertisements or on social media, you may see claims such as:

“80% survival rate,”

“Almost all fat remains,”

“Stem cells make the fat stay,” etc.

But in reality:

Even with:

• Stem cell additives
• Exosomes
• PRP or other boosters

➡ Achieving 70–80% survival is biologically impossible.

There is a physiological limit to how much transplanted fat can survive, and no additive—no matter how expensive—can exceed this limit.

Realistic expectation: 30–50%

Some patients experience unusually high retention, but this is due to:

• Individual vascularity
• Hormonal environment
• Diet and inflammation control
• How carefully they follow postoperative instructions

These represent outliers, not the average.

The real cause of lumps (fat necrosis)

Fat necrosis occurs when clusters of fat cells die.

Even 0.1 cm clumps can become necrotic and turn into:

• Palpable lumps
• Hard nodules
• Oil cysts

At AVAN TOKYO, we minimize this risk by using:

✔ Multi-layered microinjection

✔ Avoiding overfilling

✔ Optimal centrifugation based on fat quality

✔ Controlled injection pressure and vector

✔ Precise anatomical layer selection

This greatly reduces postoperative complications.

Do stem cells or exosomes improve the result?

Current medical literature shows:

**They may improve the “environment” for survival (VEGF, TGF-β, anti-inflammatory effects),

but they cannot guarantee a high survival rate for all patients.**

In the future, regenerative adjuncts may contribute more significantly, but

there is no evidence today that they raise the survival to 70–80%.

→ The most powerful “secret” for better fat survival is surprisingly simple: Soy milk.

Many patients who achieved excellent survival shared that they strictly controlled their diet.

Soy milk contains:

• Isoflavones (mild estrogen-like effect)
• High-quality plant protein
• Anti-inflammatory phytonutrients

These factors contribute to a more favorable environment for fat graft survival.

Scientifically speaking, soy milk does more than any unproven stem cell option.

Case Study: Arm Liposuction + Fat-Grafting Breast Augmentation

(250 cc right / 240 cc left, 3 months postoperative)

With careful diet management, this patient shows:

• Excellent early retention
• A soft, natural breast shape
• Stable contours
• Harmonized upper-body silhouette

Fat grafting success relies on the perfect combination of:

fat quality × surgical technique × postoperative care

Summary — How to Succeed with Fat-Grafting Breast Augmentation

1. 

Expect 30–50% survival; 80% is impossible

2. 

Regenerative additives are supportive, not magical

3. 

Avoiding lumps requires a highly skilled technique

4. 

Diet and inflammation control (soy milk!) matter more than anything

5. 

AVAN TOKYO prioritizes the optimal balance between safety and maximal survival