When you change what you put in your body (eating health based and adding nutrition supplementation) you will see changes over increments of time. The biggest changes are usually noticed in 30 to 60 days. The most common changes noticed are increased energy and less aches and pains.
However, if you are an energetic person you will not likely notice any changes in your energy.
The next timeline jump is 90 to 120 days. You will likely be moving in the right direction but on things you cannot feel or see, such as better cholesterol numbers, better regeneration of cells, etc.
The final period is 180 days and beyond. The changes are even more subtle but when you notice them it is very rewarding. Changes such as clearer brighter eyes, better looking skin, less creaking noises in your joints, better looking finger nails and toenails, etc.
If you stick with it your body will continually reward you.