26
The special lighting needs for older people are not only limited to
vision but also include the biological effects of light on personal
health.
With aging, melatonin levels drop. A person of 50-60 years
secretes about 35 % of the melatonin of a 10-year-old, which
will impact the circadian rhythm and sleep-wake cycle.
Melatonin level drops with age
P U B E R T Y O C C U R S A S
M E L A T O N I N D E C L I N E S
A G E ( Y E A R S )
M E L A T O N I N ( P G / M L )
M E L A T O N I N P E A K S
I N E A R LY C H I L D H O O D
N E W B O R N S P R O D U C E
M I N I M A L M E L A T O N I N
M E L A T O N I N C O N T I N U E S
T O D E C L I N E I N M I D D L E A G E
O L D E R P E O P L E P R O D U C E
N E G L I G I B L E A M O U N T S O F
M E L A T O N I N
1 4 0
1 2 0
1 0 0
8 0
6 0
4 0
2 0
0
1 0
2 0
3 0
4 0
5 0
6 0
7 0
L I G H T & W E L L - B E I N G
01
02
03
04
