Time dilation, as predicted by the theory of relativity, affects the passage of time and can have consequences for various physical processes, including biological systems. However, it's important to note that the time dilation effects experienced in everyday scenarios, such as those on Earth's surface or in ordinary motion, are extremely small and not significant enough to halt the growth of body cells.
The time dilation effects that have been observed and measured are typically at the level of nanoseconds or even smaller. For example, the time dilation due to Earth's gravity and velocity is on the order of 10^(-16), meaning that for every second experienced in deep space, a clock on Earth's surface would tick approximately 1 × 10^(-16) seconds slower.
Such minuscule time dilation effects do not have a noticeable impact on biological processes, including cell growth, development, and aging. Biological clocks and processes are regulated by a multitude of intricate biochemical and genetic mechanisms that are not significantly influenced by the small time dilation effects experienced in everyday situations.
However, it's worth noting that extreme time dilation effects near objects with extremely strong gravitational fields, such as black holes, could have more significant consequences. In such extreme environments, time dilation becomes much more pronounced, and the effects on biological systems would likely be more noticeable. However, these scenarios are highly hypothetical and not directly applicable to most situations in the universe.
In summary, while time dilation does have effects on the passage of time, the small time dilation experienced in everyday life does not significantly affect biological clocks or the growth of body cells. The biological processes that regulate cell growth and development are not directly influenced by these minute variations in the flow of time.