Spermidine Exhibits Protective Effects Against Traumatic Brain Injury.

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High-Dose Spermidine Supplementation Does Not Increase Spermidine Levels in Blood Plasma and Saliva of Healthy Adults: A Randomized Placebo-Controlled Pharmacokinetic and Metabolomic Study

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Anti-ageing molecule boosts fertility in ageing mice

‘Undeniably groundbreaking’ work shows that declining egg quality in older mice can be reversed with a dietary supplement.

Spermidine ameliorates non-alcoholic fatty liver disease through regulating lipid metabolism via AMPK

Spermidine ameliorates non-alcoholic fatty liver disease through regulating lipid metabolism via AMPK

New Insights into the Roles and Mechanisms of Spermidine in Aging and Age-Related Diseases

High incidences of morbidity and mortality associated with age-related diseases among the elderly population are a socio-economic challenge. Aging is an irreversible and inevitable process that is a risk factor for pathological progression of diverse age-related diseases. Spermidine, a natural polyamine, plays a critical role in molecular and cellular interactions involved in various physiological and functional processes. Spermidine has been shown to modulate aging, suppress the occurrence and severity of age-related diseases, and prolong lifespan. However, the precise mechanisms through which spermidine exerts its anti-aging effects have not been established. In this review, we elucidate on the mechanisms and roles underlying the beneficial effects of spermidine in aging from a molecular and cellular perspective. Moreover, we provide new insights into the promising potential diagnostic and therapeutic applications of spermidine in aging and age-related diseases.

The Regulatory Effect of Biogenic Polyamines Spermine and Spermidine in Men and Women

"The incidence and prevalence of infertility and sexual dysfunction in men and women is increasing. The biogenic polyamines spermine and spermidine are important for sexual function as well as fertility." "The biogenic polyamines spermine and spermidine appear to support a trend toward hormone balance,

Mechanisms of spermidine-induced autophagy and geroprotection

Great review article from Nature Aging detailing updated understanding of the science of spermidine.

Spermidine ameliorates high-fat diet-induced hepatic steatosis and adipose tissue inflammation in preexisting obese mice

Spermidine administration improved high-fat diet-induced glucose tolerance.
Spermidine attenuated hepatic steatosis and reduced fat inflammation.
Spermidine promoted brown adipose tissue thermogenesis.
Spermidine enhanced gut barrier function in obese mice.

Spermidine in Health and Disease

Review article published in Science that serves as a great starting point in your spermidine research.

A spermidine-based nutritional supplement prolongs the anagen phase of hair follicles in humans: a randomized, placebo-controlled, double-blind study

Spermidine has been shown both in vitro and in mice models to have an anagen-prolonging effect on hair follicles (HFs). To evaluate the effects of a spermidine-based nutritional supplement on the anagen phase of HFs in healthy human subjects in a randomized, double-blind, placebo-controlled trial. One hundred healthy males and females were randomized to receive a tablet containing a spermidine-based nutritional supplement or a placebo once daily for 90 days.

Spermidine promotes human hair growth and is a novel modulator of human epithelial stem cell functions.

Rapidly regenerating tissues need sufficient polyamine synthesis. Since the hair follicle (HF) is a highly proliferative mini-organ, polyamines may also be important for normal hair growth. However, the role of polyamines in human HF biology and their effect on HF epithelial stem cells in situ remains largely unknown.