Longevity & Anti-Aging

By each targeting a different process that changes with age. Aging is not one single thing: the structures that turn food into energy become less efficient, protective caps on our chromosomes wear down, and key molecules the body depends on decline in supply. Each compound in this category works on one of those fronts.

There is no single right answer, but NAD+ is the most widely researched and discussed of the three, which makes it the usual starting point. MOTS-c is the newest, discovered in 2015 and researched mainly around metabolism and energy, while Epithalon has the longest history, with research going back to the 1980s. A simple way to think about it: NAD+ for the most established conversation, MOTS-c for the newest science, and Epithalon for the longest running research line.

MOTS-c is a small peptide of 16 amino acids with an unusual origin: its instructions are stored in the DNA of mitochondria, the structures inside cells that turn food into energy, rather than in the cell's main DNA like almost every other peptide. It acts as a messenger that helps cells manage energy and respond to metabolic stress. It is the youngest compound in this category and one of the most actively researched.

Metabolism and energy. MOTS-c is researched for how cells take up and use fuel, how the body responds to insulin, and how muscles hold up under demand. Those functions tend to weaken with age, with insulin response and everyday energy often among the first to slip, which is why a peptide working on those fronts draws so much attention in aging science.

Because exercise is when the body makes more of it. MOTS-c levels in muscle and in the blood rise during physical activity, and research has explored whether the peptide can support physical capacity on its own. That overlap is why MOTS-c is sometimes called an exercise mimetic, a compound that imitates some of what training does. The idea draws attention because the ability to train hard declines with age, which makes a compound that reaches some of the same pathways an obvious research target.

Epithalon is a very short peptide, just four amino acids, modeled on a substance produced by the pineal gland, a small gland in the brain best known for making melatonin and helping govern sleep and body clocks. It has been studied since the 1980s, which makes it one of the oldest research lines in the longevity category. Most of that research has explored how the pineal gland's signals change with age and what restoring them might mean for the rest of the body.

Yes, they are two spellings of the same four amino acid peptide, and you will occasionally see Epithalone as well. The name to keep separate is Epithalamin, the original pineal gland extract that Epithalon was modeled on: the two are related, but not the same thing. If you are reading about any of the first three names, it is the same molecule.

They are where much of its research has pointed. Telomeres are protective caps on the ends of chromosomes, often compared to the plastic tips that keep shoelaces from fraying, and they gradually shorten as cells divide across a lifetime. Epithalon research has focused on telomerase, the enzyme that maintains and rebuilds those caps, and on whether the peptide can influence its activity. That focus is why Epithalon comes up so often in conversations about the cellular side of aging.

NAD+ is a molecule found in every living cell, where it plays a part in hundreds of processes, most importantly converting food into usable energy and supporting the machinery that repairs DNA. You will see it written as NAD or NAD+, which for everyday purposes refer to the same molecule. The reason it appears in the longevity conversation is simple: NAD+ levels fall substantially as we age, and that decline runs alongside many of the changes we associate with getting older.

No. Peptides are short chains of amino acids, while NAD+ is a coenzyme, a helper molecule that enzymes throughout the body need to do their jobs. It appears alongside peptides because it is researched for the same goals, discussed in the same communities, and often available from the same specialist brands. Same neighborhood, different type of molecule.