Age Slower. Be Awesome Longer.
According to the latest research, here's how to quickly slow biological aging by three years.
What's your functional age? That's not the same question as "How old are you?" Your functional age, also called your biological age, is about physiological function and cellular integrity. You may be chronologically 40 years old, but your internal workings behave like you're 50... or 30 if you take care of yourself.
Processes like DNA damage, oxidative stress, inflammation, and telomere shortening drive functional aging. As a refresher, telomeres are protective DNA sequences at chromosome ends. You've probably heard them compared to the little plastic things (aglets) at the ends of shoelaces. When they age, your shoelaces get frayed.
When your telomeres fray or shorten, your chromosome ends unravel or fuse with other chromosomes. This causes cells to stop dividing properly, leading to weaker tissues, slower healing, and a higher risk of heart problems or cancer. In short, you get old, fragile, and disease-prone.
Preventing telomere shortening might be the real fountain of youth, or at least part of it. The only problem? So far, that's impossible, but we can slow it down. A brand new study shows us one way to do it.
3 Years of Delayed Biological Aging
This study, published in The American Journal of Clinical Nutrition, found that taking at least 2000 IU of vitamin D3 daily reduced cellular wear and tear and slowed telomere shortening.
Researchers measured the white blood cell telomere length of over 1000 men and women. Then, half took vitamin D3 daily and half took a placebo. After four years, telomere length was remeasured. The D3 users had significantly less telomere shortening, equivalent to aging about three years slower.
Researchers think vitamin D3 reduces oxidative stress, regulates immune responses, and supports genomic stability, all things that erode our telomeres.
How to Use This Info
Obviously, take your vitamin D3 (not D2), at least 2000 IU daily. The only problem? Natural aging makes it difficult for our bodies to absorb vitamin D from food. And even aging skin doesn't kickstart the conversion process from sunlight as well as it used to.
To make sure you're getting enough vitamin D and absorbing it, use the microencapsulated form. Encapsulation improves the vitamin's stability, protecting it from degradation due to heat, moisture, or stomach acid, and enhances its bioavailability, allowing better absorption. It also lasts longer in the body.
D Fix High Absorption Vitamin D (Buy at Amazon) contains 5000 IU of this microencapsulated form. To replicate this study, you'd only need to take one softgel every other day. That means a single bottle of D Fix would last about 6 months.
For more info about slowing biological aging, check out our article, Roll Back the Death Clock.
Reference
- Zhu, et al. "Vitamin D3 and Marine Omega-3 Fatty Acids Supplementation and Leukocyte Telomere Length: 4-Year Findings from the VITAL Randomized Controlled Trial." Am J Clin Nutr. 2025 May 10:S0002-9165(25)00255-2.
