🧪 Your Body Makes a Peptide That Literally Tells Cells Not to Die

🧪 Your Body Makes a Peptide That Literally Tells Cells Not to Die — Meet Humanin

Deep inside your mitochondria (the tiny power plants in every cell), your body produces a small signaling peptide called Humanin. It was discovered in 2001 by researchers who were specifically looking for something that could protect brain cells from Alzheimer's-related damage. What they found was a 24-amino acid molecule that essentially tells cells under stress "don't self-destruct yet" by blocking the proteins that trigger cell death.

What makes Humanin fascinating is where it comes from. Most of the proteins your body makes are coded by DNA in the nucleus of your cells. Humanin is one of the first peptides we discovered that's actually coded by your mitochondrial DNA. That means your mitochondria aren't just making energy, they're sending survival signals to the rest of the cell. Scientists now call these "mitochondria-derived peptides" and it's opened up an entirely new field of research.

Here's where it gets really interesting 👇

🔬 A study on centenarians found that people who live past 100 and their children have higher circulating Humanin levels than everyone else

🔬 Humanin levels naturally decline as we age, which tracks with declining mitochondrial function over time

🔬 A synthetic analog called HNG is roughly 1000x more potent than the natural version and has shown cardioprotective and neuroprotective effects in preclinical models

The big picture takeaway is that your mitochondrial health might be doing way more than just giving you energy. It could be actively producing molecules that protect your brain, heart, and metabolism. What's one thing you do to support your mitochondrial health?

For research purposes only.

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