I’m curious why dietary nucleotides aren’t popular as an antiaging supplement. I believe there have been four studies in rodents now finding that it extends maximum and mean lifespan.
The most recent study is from 2013 and used RNA. From the abstract: “[Dietary Nucleotides] notably increased the mean life span, and the maximal life span. Compared to the control group, the incidence of death from tumors was decreased in NTs groups of both sexes.”
Xu M, Liang R, Guo Q, Wang S, Zhao M, Zhang Z, Wang J, Li Y. Dietary nucleotides extend the life span in Sprague-Dawley rats. J Nutr Health Aging. 2013 Mar;17(3):223-9. doi: 10.1007/s12603-012-0399-z. PMID: 23459974.
One or two of the older studies were by a Max Odens who used RNA plus DNA. In one study, they were injected into rats and it increased maximum lifespan so much that people chose to dismiss the findings. In a strain of rats that live 800 to 900 days, one rat in the treated group lived to be 2250 days old. And then there was another study using RNA plus DNA where rodents were fed the mixture also with good results. Finally, another study where rodents were fed just RNA alone, and there was a lesser but still substantial increase in lifespan.
The first reference (2013) speculated that the cause of increased lifespan was that the nucleotides would “inhibit the age-related decrease in the activities of antioxidant enzymes and the age-related increase in the levels of lipid peroxidation product.” They noted this might be especially important for tumor-prone rats.
This could be important for people, but humans are not nearly tumor-prone as these rats. And boosting the antioxidants in the body isn’t always a good thing. I’d love to see some human or other species studies.
The investigation of the effect of nutritional factors on the process of aging has only recently been given attention. In this paper, Dr. Gardner reports on the increase which yeast nucleic acid produces in the life span of 600 day old albino mice, and contrasts his results with those of an earlier investigator who administered both yeast and thymus nucleic acid in far larger amounts to mice from birth. Dr. Gardner discusses three possible explanations for the increase in longevity produced by nucleic acids: maintenance of a high nucleocytoplasmic ratio in the cells, oxidation of ingested nucleic acids in place of cell nucleic acids, and stimulation of leukocytic activity.
In experiments conducted with drosophila melanogaster, Dr. Gardner noted that biotin had no effect upon the life span, but both pyridoxine and sodium yeast nucleate lengthened it. These three substances in combination materially extended the span of life, and with the addition of pantothenic acid a substantial increase was demonstrated.
Another paper below. Note that treatement began in elderly rats. LEF sells affordable RNA capsules. But the 50:50 RNA/DNA supplements have disappeared in the last two years.
Kent S. Can nucleic acid therapy reverse the degenerative processes of aging? Geriatrics. 1977 Oct;32(10):130-6. PMID: 409642.
Of particular note is a study by English physician Max Odens in which weekly injections of DNA and RNA were given to five rats with a normal maximum life span of 800 to 900 days; treatment began at the age of 750 days. All the untreated rats died before the age of 900 days, while four treated rats survived to ages of 1,600 to 1,900 days, and one rat survived
2,250 days. This degree of prolongation of the life span is unparalleled in gerontological research.
“However, on the basis of two other just as probable hypotheses for the mode of action of yeast nucleic acid, to be described later, only 2.5 mg. per mouse per day were used in my experiments. The corresponding amount for human beings, 5.5 gm., is entirely practical for clinical testing on aging people”
This seems legit, equally curious, but apparently not currently mainstream.
You need to get Richard Miller at ITP on this!
Are you taking any of these things Vlasko?
What other types of supplements would you suggest?
“Ten rats of a strain in which the life span varies between 800 and 900 days, were selected for the experiment when they were each 750 days old. They were given the same diet. Group A, the controls, were not treated. Group B received weekly injections of DNA solution in water saturated with chloroform (3 mg per ml) plus ordinary RNA. All necessary determinations such as temperature and weight were made. The charts were compared every day. After twelve weeks
of injections, Group B rats looked younger, were very lively, and had gained weight (1.5-2.3 gm), Group A rats looked old, moved slowly, did not eat much, and had lost weight. The difference was remarkable. All the untreated rats died before 900 days. Of the treated rats, 4 died aged between 1600 and 1900 days. One rat lived 2250 days.”