How much amount you will get depends mainly on genetic factors, while other parameters, such as the early or late advent of puberty, underlying chronic diseases and the eating habits also affect the growth rate.However, the height begins to decrease from the age of 40.
From the fourth decade of life and then, we’re losing around 1.25 inches of height per decade.
This is because gravity in combination with the wear and tear brought on by aging, leading to shrinkage of the disks located between the vertebrae of the spine.
The loss of bone density, osteoporosis, muscle degeneration and loss of curvature in the arch of the foot contribute to the further reduction of the height.
Source
Incredible: How much height we lose as we get older
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