The main thing seems to be ensuring nutrient/hormone sufficiency. For example, keeping everything on a NutrEval + hormone + thyroid panel in range. Diet alone can maintain, but supplements are usually required to achieve sufficiency. A vitamin D (and magnesium) supplement is often needed either way.
Aging (rather than longevity) usually refers to vitality and skin quality. Wrinkling/Sagging isn't normal at any stage of development (up to menopause), though it is common. Sagging is usually due to poor lymph movement and muscle tone. Wrinkles are usually due to poor hydration. Both can be made worse by declining collagen/progesterone.
Maintaining nutrient sufficiency, following iodine protocol, and applying MSM lotion does a lot to slow "aging."
Aging (rather than longevity) usually refers to vitality and skin quality. Wrinkling/Sagging isn't normal at any stage of development (up to menopause), though it is common. Sagging is usually due to poor lymph movement and muscle tone. Wrinkles are usually due to poor hydration. Both can be made worse by declining collagen/progesterone.
Maintaining nutrient sufficiency, following iodine protocol, and applying MSM lotion does a lot to slow "aging."