Palm lines form before birth and are influenced by fetal movement, genetics, and amniotic environment. The major lines — life, head, and heart — are largely set early and tend to remain recognisable throughout life, though they deepen, fade, or develop branches over time.
Finer lines — including union lines, children lines, minor fate line branches, and the Sun line — are more variable. They respond to factors including age, skin elasticity, health changes, occupation (hand-intensive work creates lines), weight, and even stress.
For palmistry, this creates an uncomfortable implication: if lines change, any reading is a snapshot, not a permanent document. Most thoughtful palmists acknowledge this.
