There are two forms of toxins that we are exposed to on a daily basis, endogenous and exogenous toxins: 
Endogenous toxins are those produced by the body, such as endotoxins (parts of bacteria), hormone metabolites (such as estrogen), and metabolic waste products (such as ammonia and carbon dioxide).
Exogenous toxins come from our external environment: Substances such as heavy metals (mercury, lead, arsenic), mold and their byproducts (mycotoxins), plasticizers (phthalates and BPA), pesticides and herbicides such as glyphosate (Round-Up), and medications.
When toxin intake exceeds the body's removal capabilities, toxins accumulate in cells and tissues. This over- taxation of our natural detoxification systems impairs neurological function, disrupts endocrine (hormonal) activity, weakens the immune system, and contributes to chronic inflammation. Over time, this toxic burden can lead to chronic diseases, including neurodegenerative disorders, cardiovascular disease, and cancer.