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Spermidine could be your secret to living longer: How it renews your brain, skin, and longevity from within

Spermidine could be your secret to living longer: How it renews your brain, skin, and longevity from within

Time of India2 days ago
Spermidine, a naturally occurring compound found in certain foods and within our own cells, is rapidly gaining recognition for its wide-ranging anti-ageing benefits. From boosting brain function and heart health to improving skin, hormonal balance, and immunity, this polyamine plays a vital role in cellular renewal by activating autophagy, the body's self-cleaning process.
As natural levels decline with age, incorporating spermidine through diet or supplements may offer a powerful way to promote longevity and vitality. Backed by emerging studies, spermidine is now seen as a key player in the science of graceful ageing.
What is spermidine, and why is it important?
Spermidine is a polyamine compound essential to cellular growth, repair, and metabolic regulation. It activates autophagy, a biological process that helps the body remove dysfunctional cell components and maintain internal balance.
Naturally present in semen (hence its name), spermidine is also found in breast milk, as well as foods such as wheat germ, soybeans, mushrooms, peas, mature cheese, and some leafy greens. Additionally, it is produced by the gut microbiome. Levels of spermidine in the body tend to decline with age but can be elevated through specific foods, exercise, fasting, and supplementation.
6 Reasons why spermidine might be the key to healthier ageing
Supports the immune system and reduces inflammation
Research
from several universities has shown that spermidine supplementation can rejuvenate the immune systems of ageing mice.
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A well-functioning immune system is vital for defending the body against pathogens, cancer, and inflammatory diseases.
Because spermidine has potent anti-inflammatory properties, it may benefit those with autoimmune conditions or chronic inflammatory disorders. Reducing inflammation also lowers the risk of cardiovascular disease, type 2 diabetes, and joint pain.
Helps balance hormones and improve
fertility
markers
A
study
highlighted spermidine's potential in improving fertility and hormonal health.
In older female mice, it was shown to improve egg quality and support hormone regulation.
The same research revealed a significant drop in cortisol (the stress hormone) after supplementation, along with an increase in testosterone in men. In women, levels of oestrogen, progesterone, and testosterone also improved, alongside precursors like DHEA and pregnenolone.
Some participants even reported reduced urgency linked to incontinence, likely due to improved cell regeneration in bladder tissues.
Promotes hair growth and reduces greying
Hair colour and thickness are strongly linked to melanin and the hair follicle's growth cycle. As people age, melanin production drops, resulting in greying.
Spermidine
has been shown to prolong the growth (anagen) phase of the hair cycle, helping retain hair colour longer and promoting thicker, fuller strands. It also supports rapid cell turnover, which can improve the health of skin and nails.
Supports brain function and cognitive longevity
Spermidine's ability to promote autophagy also extends to brain cells. A
study
found that regular intake of spermidine helped reduce cognitive decline, memory loss, and neurodegeneration in ageing subjects.
This mechanism plays a role in clearing toxic protein build-up in the brain, such as amyloid-beta and tau, both associated with Alzheimer's disease. By supporting brain detoxification, spermidine contributes to better memory, focus, and mental clarity.
Improves cardiovascular health
A
study
found that spermidine supplementation led to improved heart function and increased lifespan. In humans, similar benefits are being explored in relation to the support of cardiomyocytes, the heart muscle cells responsible for regulating heartbeat.
These cells are slow to regenerate naturally, but spermidine may help maintain their performance, promoting heart rhythm stability and reducing the risk of heart disease.
Helps manage
non-alcoholic fatty liver disease
(NAFLD)
NAFLD
is a condition marked by excessive fat build-up in the liver, unrelated to alcohol intake. It is commonly linked to obesity, insulin resistance, and metabolic syndrome.
In animal models, spermidine has demonstrated the ability to reverse some of the effects of NAFLD by improving liver function, reducing triglyceride levels, and lowering LDL ('bad') cholesterol.
These metabolic improvements support overall health and reduce the risk of chronic disease.
How to increase spermidine intake
While the body produces some spermidine naturally, experts suggest a minimum of 1 milligram per day for measurable benefits, a level that may be hard to achieve through diet alone.
Supplementation ensures a consistent dose and is considered a reliable way to support brain and immune function. However, a plant-rich diet can also provide spermidine along with valuable fibre and nutrients.
Top spermidine-rich foods include:
Mature or aged cheeses
Wheat germ
Soybeans and legumes
Mushrooms
Green peas
Spinach and broccoli (in smaller amounts)
Spermidine is quickly becoming a standout in the world of longevity and wellness, and for good reason. By helping your body renew itself from the inside out, it supports healthier ageing across the board, from sharper brain function and hormonal balance to radiant skin, stronger hair, and a more resilient immune system. While your body produces less of it with age, adding spermidine-rich foods or high-quality supplements to your routine could be a simple yet powerful step toward living a longer, healthier, and more vibrant life.
Also Read:
7 sleep disruptions that could mean your cortisol is spiking
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