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Ocean Acidification, Iodine Bioavailability, and Cardiovascular Health: A Review of Possible Emerging Risks
Charalampos Milionis1, Costas Thomopoulos2, Emilia Papakonstantinou3
1Department of Endocrinology, Diabetes & Metabolism, Elena Venizelou Hospital, 11521 Athens, Greece.
Ocean acidification from climate change may increase iodine exposure through marine ecosystems, potentially impacting thyroid and cardiovascular health, especially in coastal communities. Further research is needed to understand these risks.
Area of Science:
- Environmental Science
- Marine Biology
- Endocrinology
Background:
- Anthropogenic climate change is causing ocean acidification.
- Ocean acidification alters marine iodine cycling and bioaccumulation.
- Increased iodine exposure poses risks to thyroid and cardiovascular health.
Purpose of the Study:
- To synthesize mechanistic pathways connecting ocean acidification, iodine bioavailability, thyroid function, and cardiovascular health.
- To highlight the need for further investigation and interdisciplinary collaboration.
Main Methods:
- Narrative review of existing experimental and observational data.
- Synthesis of potential biological and environmental interactions.
Main Results:
- Ocean acidification may enhance iodine uptake in marine organisms like kelp and seafood.
- This can lead to increased dietary iodine exposure for humans.
- Chronic iodine excess is linked to thyroid disease and cardiovascular disorders.
Conclusions:
- Ocean acidification presents a potential risk factor for increased iodine exposure and associated health issues.
- Ongoing environmental monitoring and interdisciplinary research are crucial.
- Further studies are needed to confirm these associations and inform public health strategies.
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