It’s not risk free food.
HEALTH
Energy: mollusks are bad for / increase the risk of memory loss from PBCs, sickness from bacterial contamination, seafood is the number one cause of food poisoning in the United States, which leads to many side effects and causes extreme discomfort, high levels of mercury can lead to depression and anxiety
Longevity: mollusks are bad for / increase the risk of toxic chemicals known to cause cancer and brain degeneration, toxic contaminants and heavy metals from polluted water habitats, PBCs may cause liver damage, nervous system disorders, and fetal damage, dioxins, also linked to cancer and death, radioactive substances like strontium 90 and other dangerous contaminants like cadmium, mercury poisoning, lead, chromium, and arsenic, which can cause health problems such as kidney damage, impaired mental development and cancer, high levels of mercury can lead to Alzheimer’s, Parkinson’s, autism, mercury exposure can also lead to high blood pressure, an increased risk of heart attacks and higher LDL (bad) cholesterol
https://www.healabel.com/mollusks-side-effects/
None of this applies to the farmed shipworms.