Vitamin C Eased Iron-Driven Aging Signs in Old Monkeys
Graded Preliminary — experiments in old monkeys over more than 40 months, plus mice; results from animals cannot be applied directly to humans.
Animal study. Findings may not carry over to people, which is why the grade is capped at Preliminary.
- Design
- Animal study
- Participants
- —
- Duration
- 3.3 years
- Funding
- National Natural Science Foundation of China
In old monkeys, more than 40 months of vitamin C reduced signs of iron-driven aging across many tissues.
As the years pass, iron builds up in many tissues. Researchers saw this in tissue samples from humans and other primates. The iron fuels slow, ongoing damage to fats inside cells, steered by an enzyme called ACSL4. The team calls this "ferro-aging", meaning aging driven by iron. It pushes cells into an aged state where they stop dividing, and it wears down organs.
In mice, the researchers blocked ACSL4 in the liver using gene editing, and the animals showed fewer signs of aging. A search for compounds that block the enzyme turned up vitamin C, which binds to it directly. Old monkeys then received vitamin C for more than 40 months. Signs of ferro-aging dropped across many tissues, and organ damage was milder. The nervous system and metabolism worked better. Several aging clocks, which estimate biological age from many molecular measurements, gave younger readings.
All of this comes from monkeys and mice. Whether vitamin C acts the same way in people was not tested. The study summary gives neither the dose nor the number of animals.
Conflict of Interest Disclosure: Five authors work for Altos Labs, and one author holds patents on epigenetic clocks.
Disclaimer: Research summaries are provided for informational purposes only and do not constitute medical advice. Always consult a qualified healthcare professional before making changes to your health routine.