1) Longivity decides from:
1-HS : The Native/body
3-HS : Longevity
8-HS : Danger
2) Also check: Sun - Moon - Saturn
#Sun - Resistence
#Moon - Mind/Mental Capability
#Saturn - Karaka for Longevity
3) 3D are danger for Health:
6th - Disease
8th - Danger
12th - Defect
4) There are three categories:
1) Short - 0-33 years
2) Medium - 33-66 years
3) Long - above 66 years
5) Chart:
| Movable | Fixed | Mutable | |
| House | 1,4,7,10 | 2,5,8,11 | 3,6,9,12 |
| Badhaka | 11 | 9 | 7 |
| Maraka | 2,7 | 2,7 | 2,7 |
| Bad Houses | 6,8,12 | 6,8,12 | 6,8,12 |
| End of Life | 4 | 4 | 4 |
| +VE HS | 1,3,5,9,10 | 1,3,5,10,11 | 1,3,5,9,10,11 |
6) If Sun, Moon and Saturn all these are connected with either Badhaka or Maraka or Both will reduce the longevity of the native.
7) If Mercury karaka of nervous system is also affected by any planet, aspect or by sign will reduce it's strength.
8) If Saturn in 8th HS increase Longivity
9) If Saturn Aspect 8th HS Good for Longivity
10) If Saturn connected with Badhaka or Maraka or both It will reduce the strength of saturn.
11) Saturn is yoga karaka planet for Taurus and Libra Asc. good for Longevity.
12) If 1,3,8 SL connected with Badhaka or Maraka or both houses danger for life, life may be short
13) If 1,3,8 SL connected with +ve HS and -ve HS houses indicate madhyam ayu
14) If 1,3,8 SL connected with +ve HS give Purna Ayushya or long life
15) 3rd (vipda) or 7th(maraka) dasa (nakshatra from birth nakshatra) is negative for such person