Triclocarban bioaccumulation is possible in a number of organisms. Earthworms are known to store this chemical in their bodies and, because of their ecological role as a food source, they have the potential to move triclocarban up the food chain.  Microbial species found in soils also bioaccumulate triclocarban. However, the health of these microbes has not been found to be affected by the presence of the chemical.  Triclocarban is rapidly accumulated in both algae and adult caged snails.  Moreover, triclocarban is more likely than triclosan to bioaccumulate in aquatic organisms. 
The side effects of Dianabol vary greatly depending on your individual tolerance, your dosage, and your stack choices. For the most part, though, healthy and fit men tend to tolerate Dbol quite well. The two most common Dianabol side effects for men come from its high estrogen conversion rate. Almost all users experience some bloating and discomfort, and some men develop gynecomastia, or female breast tissue. To avoid these, be certain to incorporate an aromatase inhibitor into your Dianabol cycle. What’s more, bloating increases blood pressure due to the extra fluid in the body. To combat this, you can find many diuretics over the counter.
It should be noted that in theory if one was to consistently suppress your natural estrogen levels for a long period of time, this would negatively impact your health, including your cholesterol. Due to the ability of Letrozole- to inhibit estrogen so much, this should definitely be a concern to most users. However the research that has focused on the relationship between use of letrozole and cholesterol levels is rather inconsistent in it's findings. Many studies have concluded that the compound is detrimental to both a user's HDL and LDL cholesterol levels, while other research has found no link. Obviously individuals are best served to monitor their cholesterol while using any compound via blood tests however barring that, letrozole should simply not be run for extended periods of time if at all possible. Doing so could cause serious medical complications.
Along with the issues related to blood lipids is the fact that many users complain that their libido is dramatically reduced when using the compound. This is related to the fact that estrogen is partly responsible for the regulation of an individual's sex drive. Since Letrozole- is so potent it can often drive estrogen levels too low and this inhibits a user's libido. To avoid this users can lower dosages, but some anecdotally report that even extremely low doses of the drug can cause problems. If this is the case a less potent compound such as exemestane or anastrozole may be a more appropriate option.