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Published on Dec 5, 2015
9. Nutritional and mental hormetins: Continuing our thoughts about the good effects of stress of choice. This framework of hormesis and hormetins is very important to understand, appreciate and practice methods of stopping ageing – if that is what you are still focussing on. Exercise is the best example of physical hormetins. Heat, cold, radiation are other examples of physical hormetins. And then there are hormetins in the food – nutritional hormetins. Spices and things like onion, ginger, garlic, which have no normal nutritional value in terms of proteins, fats and carbohydrates, have hormetic value. They are good for the body, because they are bad for the cells to begin with. A spice like turmeric used in curry-dishes has many chemicals in them, specially curcumin is well known. Curcumin is a nutritional hormetin. It causes a little bit of damage or little bit of stress inside the cells, and then the cells increase their own defense mechanisms. Many other polyphenols, flavonoids, things like resveratrol in red wine, are most common nutritional hormetins. Even not-eating for a while or fasting is a kind of hormetin. It creates nutritional stress, and the cells’ stress responses then take over. Mental hormetins by brain exercise and brain concentration, meditation, is the third category of stress of choice, which is health promoting. How shall we make use of these physical, nutritional and mental hormetins, will be the topic of the next two minutes.