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First Randomized, Double-blind, Placebo Controlled Study To Show Telomeres Getting Longer In Humans

Salvador L, Singaravelu G, Harley CB, Flom P, Suram A, Raffaele JM.

TA-65 is a dietary supplement based on an improved formulation of a small molecule telomerase activator that was discovered in a systematic screening of natural product extracts from traditional Chinese medicines. This study summarizes the findings on telomere length (TL) changes from a randomized, double blind, placebo controlled study of TA-65 over a 1 year period. The study was conducted on 97 relatively healthy cytomegalovirus-positive subjects aged 53-87 years old. Subjects taking the low dose of TA-65 (250 U) significantly increased TL over the 12 months period, as compared to the placebo group (530 ± 180 bp; p = 0.005), whereas subjects in the placebo group significantly lost TL (290 ± 100 bp; p = 0.01). The high dose of TA-65 (1000 U) showed a trend of improvements in TL compared with that of the placebo group; however, the improvements did not reach statistical significance. TL changes in the low-dose group were similar for both median and 20th percentile TLs. The findings suggest that TA-65 can lengthen telomeres in a statistically and possibly clinically significant manner.

Study Summary

  • Study participants: 97 men and women (53-87 years old)
  • Study length: 12 months
  • First study to show statistically significant (p<0.005) lengthening of telomeres in humans:

As expected, the placebo group showed a decrease in telomere length

Placebo Group
Decrease in median telomere length over 12 months

Median telomere length 290 ± 100 bp
20th percentile telomere length 170 ± 50 bp

While the group taking one capsule of TA-65® (250 Units) per day showed an increase in telomere length

TA-65® Group
Increase vs placebo group in median telomere length over 12 months

Median telomere length 533 ± 180 bp
20th percentile telomere length 270 ± 90 bp
  • Published in Rejuvenation Research, a PubMed-indexed and peer-reviewed journal — [PMID: 26950204]