Posts Tagged ‘sirtuins’
October 24th, 2019 by Dr. Hannah Sivak
Warning: this is a “heavy” post that may feel to you like you are back in school and not in a good way (like for prom). You don’t have to read it but the objective is to convey to you the complexity of skin metabolism and molecular biology and why you should never look for a “magic” ingredient when it comes to skin youth and health. In short, life (LIFE) is complicated. Your skin is alive. Below the few layers of dead cells in the epidermis, perfectly designed for the tough job of protecting your body from pollution and damage, is the basal cell layer. Here is your stem cells…
July 12th, 2019 by Dr. Hannah Sivak
Yes, they can both be true. If there was ever an example of why you should not have “absolute”preferences (be dogmatic about a subject), this is it. I have posted a lot about natural vs. synthetic chemicals in skin care that you may wonder if I have anything new to say. I think I do. It is unlikely that a natural chemical will be bad for you, unless they are trying to sell you a poisonous plant extract like Nerium oleander as skin care (!). This does not happen very often simply because there are not that many silly people willing to spend money on a poison. Case 1) Natural…
January 29th, 2018 by Dr. Hannah Sivak
Note: as usual, please feel free to skip stuff as you wish. There is a lot of “jargon” below. Do you remember the stories about sirtuins, resveratrol and the “French paradox”? Sirtuins are proteins with a very important role in the cell: they control the enzyme that converts acetate, a source of calories, into acetyl CoA, a key point of entry to cellular respiration. Because of this crucial role, it has been proposed that it may be possible to control age-related disorders in various organisms, and in humans. These disorders include obesity, metabolic syndrome, type II diabetes mellitus, Parkinson’s disease and the “ultimate disorder”: aging. What is the French paradox?…