SoyUp – Spermidine Powder

Premium soy powder with high spermidine content and complete soy protein

SoyUp is a natural soy-based powder rich in spermidine and high-quality soy protein that contains all essential amino acids required for optimal muscle protein synthesis.
Each 10g serving provides over 1.7 mg of spermidine, with 40 servings per container.

Highly Digestible Soy Protein

Soy protein is among the most digestible plant-based proteins.
In 1993, the FDA (U.S. Food and Drug Administration) introduced the PDCAAS (Protein Digestibility Corrected Amino Acid Score) to evaluate protein quality. Soy received the perfect score of 1.0 (Henley et al., 1994), confirming its outstanding digestibility.

Heart Health Benefits of Soy Protein

Soy protein has been shown to reduce serum triglycerides, contributing to its anti-atherosclerotic effects. This effect is linked to the β-conglycinin fraction in soy.

In 1999, the FDA approved a health claim stating:

“25 grams of soy protein a day, as part of a diet low in saturated fat and cholesterol, may reduce the risk of heart disease.”

How Soy Spermidine Supports Muscle Health

SoyUp’s combination of soy spermidine and complete soy protein actively supports:

  • Muscle growth and strength
  • Prevention of age-related muscle loss
  • Maintenance of lean body mass

Spermidine boosts protein synthesis by 1.5 to 2 times and supports the formation of ribosomal subunits – a key step in muscle building (Igarashi & Kashiwagi, 2018).

Age-Related Decline in Spermidine

Spermidine levels in the body decline with age:

  • Around age 40: levels drop by ~33%
  • By age 80: levels drop by ~66%

Supplementing with spermidine becomes essential from midlife onward to maintain cellular renewal and muscle integrity.

Debunking Myths About Soy

Despite frequent online criticism, modern science has dispelled many myths about soy, such as:

  • Alleged risks for breast cancer or prostate cancer
  • Misinterpreted studies or outdated data
  • Overreliance on animal experiments

Thousands of scientific studies—~2,000 per year—have confirmed the safety and health benefits of soy.

Safe and Beneficial for Breast Cancer Patients

Modern research shows that soy is safe—and even beneficial—for breast cancer survivors:

  • Soy isoflavones act as phyto-SERMs (plant-based Selective Estrogen Receptor Modulators)
  • They block excessive estrogen activity by occupying receptor sites
  • Result: reduced cell proliferation and lower recurrence rates

Two major meta-analyses (11,000 and 6,300 patients) found that soy consumption:

  • Reduced breast cancer recurrence
  • Improved overall survival rates

Genistein: Another Key Compound in Soy

In addition to spermidine, soy contains genistein, a powerful isoflavone with wide-ranging health benefits:

  • Hormonal balance – supports women during menopause
  • Bone health – protects against osteoporosis
  • Heart health – reduces cardiovascular risk
  • Cancer prevention – may reduce the risk of prostate cancer

Populations with high soy intake (e.g., in Asia) show significantly lower prostate cancer rates, thanks in part to genistein.

Summary of SoyUp Benefits

  • High spermidine content (1.7 mg/serving)
  • Complete soy protein with full amino acid profile
  • Supports muscle synthesis and healthy aging
  • Scientifically backed heart and cancer protection
  • Safe for women with breast cancer
  • Includes health-promoting compounds: spermidine, genistein, isoflavones