The Benefits of Spermidine: A Full Breakdown

What Are the Benefits of Spermidine?

Most of spermidine’s benefits trace back to its ability to activate autophagy, the body’s natural cellular renewal and cleanup process. By triggering autophagy, spermidine mimics some of the benefits of fasting, clearing damaged proteins, reducing oxidative stress, and supporting mitochondrial function, which in turn supports brain, heart, metabolic, and immune health [1].

Beyond autophagy, spermidine has direct effects on the hallmarks of aging, including reducing inflammation (inflammaging), supporting telomere length, aiding stem cell function, and helping protect DNA integrity [2]. Autophagy is its primary mechanism, but these additional effects contribute to longevity, cognitive resilience, skin and hair health, and overall vitality. Here is how those internal benefits show up inside and out.

Circadian Rhythm and Sleep Support

Sleep is a critical component of health, and many people notice their sleep quality slip with age. Spermidine has been found to support sleep and reduce age-related sleep disturbances by modulating some of the clock genes that regulate circadian rhythm, the body’s internal clock [3].

Primeadine users have reported meaningful improvements in Deep Sleep and Restfulness scores tracked by wearable devices. Better sleep translates to improved wellbeing and cognitive function. See our testimonials to read more. You may also notice an uptick in Heart Rate Variability (HRV), a key indicator of nervous system balance and resilience to stress, where higher readings are associated with better sleep and lower stress.

Energy and Vitality

Alongside autophagy, spermidine activates mitophagy, a process that clears out old and poorly functioning mitochondria. Mitochondria are the powerhouses of our cells, providing the energy for all cellular activity, and when they underperform, energy can flag. By supporting the renewal of healthy mitochondria, spermidine may help restore a sense of stamina and vigor.

Radiant Wellness

Spermidine supports collagen synthesis, keratin production, and wound healing, contributing to healthier hair, skin, and nails. In a human clinical trial, it was shown to support hair growth by moving follicles from the shedding phase into the growth phase and keeping them there longer [4,5]. This is also when melanogenesis, the production of hair pigment, takes place, which is why some clients notice repigmentation, though this occurs in only about 30% of clients and depends on many factors. Read our guide to natural gray hair support.

Memory and Cognition

Cognitive change is a common concern with age, and spermidine is promising here too. By stimulating autophagy, it supports brain health and cognitive function. A human clinical trial found that plant-derived spermidine may improve memory and cognition in older adults experiencing subjective cognitive decline [6].

Gut Health

Gut dysbiosis, an imbalance between beneficial and harmful bacteria in the microbiome, is one of the root causes of aging and a key indicator of poor gut health. Spermidine helps counter this by supporting the tight junctions of the gut lining. Since that lining is only one cell thick, it’s prone to becoming leaky and benefits from this support [7]. 

Hormonal Balance

Hormonal balance matters for health, especially as we age. Spermidine has been found to positively influence hormone regulation, helping stabilize key hormones. Research associates it with lower cortisol (the stress hormone) and higher levels of hormones tied to vitality, including progesterone, estradiol, DHEA, and pregnenolone in women and testosterone in men, which makes it an interesting tool for hormonal balance. One study also described its effect on fertility as a notable advance, showing improved egg quality in older mice through the induction of autophagy [8].

Cardiovascular Health

Cardiovascular health is another key aspect of aging well. Spermidine has been shown to support heart health by improving the function of endothelial cells, which line blood vessels [9], which can support better blood flow. Its anti-inflammatory properties also contribute to a healthier cardiovascular system.

Final Thoughts

If you’ve taken Primeadine for at least 6 months and aren’t sure whether it’s making a difference, we’d recommend our guide, How to Optimize Your Results with Primeadine. Since our natural ability to produce spermidine declines with age, we recommend taking Primeadine consistently and long-term. Most people notice a difference after 3 to 6 months, though not everyone experiences physical changes.

Feel free to reach out with questions or to share your success story. You can also find answers to common questions on our FAQ page.

References

1. Eisenberg, T., Knauer, H., Schauer, A., Büttner, S., Ruckenstuhl, C., Carmona-Gutierrez, D., … & Fussi, H. (2009). Induction of autophagy by spermidine promotes longevity. Nature cell biology, 11(11), 1305-1314.

2. Lopez-Otin, C., Blasco, M.A., Partridge, L., Serrano, M. & Kroemer, G. (2023) Hallmarks of aging: An expanding universe. Cell, 186(2), 243-278.

3. Zwighaft, Z., Aviram, R., Shalev, M., Rousso-Noori, L., Kraut-Cohen, J.,Golik, M., … & Asher, G. (2015). Circadian clock control by polyamine levels through a mechanism that declines with age. Cell metabolism, 22(5), 874-885.

4. Rinaldi, F., Marzani, B., Pinto, D., & Ramot, Y. (2017). A spermidine based nutritional supplement prolongs the anagen phase of hair follicles in humans: a randomized, placebo-controlled, double-blind study. Dermatology Practical & Conceptual, 7(4), 17.

5. Ramot, Y., Tiede, S., Bíró, T., Bakar, M. H. A., Sugawara, K., Philpott, M. P., … & Paus, R. (2011). Spermidine promotes human hair growth and is a novel modulator of human epithelial stem cell functions. PLoS One, 6(7), e22564.

6.  Wirth, M., Benson, G., Schwarz, C., Köbe, T., Grittner, U., Schmitz, D., …& Flöel, A. (2018). The effect of spermidine on memory performance in older adults at risk for dementia: A randomized controlled trial. Cortex, 109, 181-188.

7. Ramos-Molina, B., Queipo-Ortuño, M. I., Lambertos, A., Tinahones, F. J., & Peñafiel, R. (2019). Dietary and gut microbiota polyamines in obesity-and age-related diseases. Frontiers in Nutrition, 6, 24.

8. Zhang, Y., Bai, J., Cui, Z., Li, Y., Gao, Q., Miao, Y., & Xiong, B. (2023). Polyamine metabolite spermidine rejuvenates oocyte quality by enhancing mitophagy during female reproductive aging. Nature Aging, 3(11), 1372-1386. https://doi.org/10.1038/s43587-023-00498-8 

9. de Cabo R, Navas P. Spermidine to the rescue for an aging heart. Nat Med. 2016 Dec 6;22(12):1389-1390. doi: 10.1038/nm.4243. PMID: 27923032; PMCID: PMC5853099.