Thank you for your query at DoctorSpring.com
I understand where your confusion lies.
This is actually a complicated topic and studies are inconclusive.
We are exposed to thousands of toxins per day, from adulterated food, pesticides, unfiltered water, internal toxins such as lactic acid ( due to prolonged starvation, or excessive work outs ), e.t.c
Our body has a lot of levels where detoxification occurs, primarily starting with the liver, lymph nodes, blood vessels and finally the digestive tract. Some toxins survive all that and stay inside the body. Our immune system keeps fighting with it and ultimately the levels come down to non significant amounts since our blood cells can keep multiplying but not the toxins.
The toxins which do stay in our body for a long time are the heavy metal toxins. Also they lead to maximum damage in the primary exposure, so mostly in the first couple of days. Later the immune system is able to fight it off and hence even though it stays it is reduced to negligible amounts.
Can i know which toxins you're referring too? That will help me to guide you better.
Feel free to discuss further,