The effect you're speaking of is real, but extremely unlikely to apply to anti-aging. There are statistics showing apparently paradoxical effects, like smoking

The effect you're speaking of is real, but extremely unlikely to apply to anti-aging. There are statistics showing apparently paradoxical effects, like smoking and obesity reduce overall healthcare - because people simply die sooner from heart disease. Age is different. Look at health expenses per decade - the difference is like night and day. Most people in their 20s and 30s don't even visit a hospital. The healthcare expense for most of them can simply be rounded to zero. Some time in the 60s things change dramatically (health degradation is supralinear with age). So if you manage to push back the health of seniors to, for example, their 50s, you pretty much solve healthcare permanently.