Questions related to i-insulin:
1. What are your thoughts on meta-cresol?
2. Did that longitudinal study ever finish?
3. Did it use human insulin that was preserved with meta-cresol like Novolin-R?1. I messaged Dr. Suzanne Craft to get her thoughts on meta-cresol in intransal insulin. She is Professor of Gerontology and Geriatric Medicine at Wake Forest and is one of the leading researchers on intranasal insulin as a treatment for Alzheimer's. She's actually spearheading the SNIFF trial. https://www.nia.nih....etfulness-sniff
Here's her faculty page. http://www.wakehealt...aft-Suzanne.htm
Anyway, here was her response when I asked her about the risk of meta-cresol in i-insulin (quoted with permission).
"You are correct that meta-cresol is frequently used as a preservative for insulin and that animal studies have raised questions about its safety in large doses or after prolonged exposure. As with most preservatives, there is a balance that has to be achieved between the possible negative effects of the preservative and the possible negative effects of contaminated or “spoiled” insulin, particularly when one is targeting the brain, which is susceptible to bacterial infections. Several companies are working on developing meta-cresol-free insulin formulations and hopefully they will be available soon to test for the purpose of treating neurodegenerative disease, but currently they are not widely available and they are expensive relative to regular insulin. Regarding the specific risk for Alzheimer’s patients, as it is a fatal disease with no current effective treatments, I believe most scientists would agree that the potential benefit of the insulin outweighs the risks of the meta-cresol since those risks have not been definitively documented in humans at the doses used in current insulin formulations."
2. SNIFF is scheduled to finish in 2017.
3. Almost certainly yes...but I say 'almost' because the results haven't been published yet. Virtually every available insulin has metacresol in it.
4. I've been in discussions with Paul at Ceretropic and with the owner of irc.bio about providing a metacresol free insulin formulation and they were both interested in looking into it. If people want to message them to show there is demand...I wouldn't complain. =)
Ceretropic: https://www.reddit.c...terYouAreSoDumb
irc.bio: https://irc.bio/contact-us/
Thanks! I've messaged MYASD.
(It makes you wonder what the replacement would be, though. Maybe i-insulin doesn't work but metacresol hormesis enhances brain power!)
:D