I have a friend who refuses to tell me her age because "people judge a woman on her age." She has adult kids and if she happens to mention that it is one of their birthdays and you ask her how old the kid is she will say she cannot remember in case someone does some math based on how old she was when she got married or whatever. It gets very convoluted and I avoid any mention of age of anything around her.
Admiral Janeway is, of course, gorgeous. Beautiful skin, hair the colour of a nickel. I think there is no botox in the future just sonic peels and other hot stuff that keeps you looking naturally glowy. Maybe they can delay menopause for a few decades without having hormonal backlashes. Or maybe they just have great treatments for cosmetic and other signs of aging like osteoporosis.