 And it could be a good strategy to get to extended fasting. My guest today, Dr. Sean O'Mara, we'll go back to the phones if you were just joining us because we're talking a little bit about fasting. Prior to that, we're taking a look at multivitamins and supplements. How effective or ineffective are they? What's the best way to get all those nutrients you need? Jackie is listening in Austin, Texas. Jackie, welcome. It's good to have you here. Thank you. Thank you, Dr. O'Mara, for the information. I am an older woman, postmenopausal woman.