Sea moss is a type of algae, very similar to seaweed, that has some interesting health benefits. In comparison to seaweed, there is far less research on sea moss, but from what we do know, a lot of its perks might be similar to its more well-known cousin.
Sea moss may help with decreasing the prevalence of chronic diseases like diabetes and heart disease, and it is also a decent source of iodine, a mineral needed to support thyroid function. It’s for this reason, though, that having sea moss during pregnancy, at least in supplemental form, may not be advised. It’s fairly common for pregnant people to develop issues with thyroid function during pregnancy, and consuming foods that are higher in iodine in concentrated amounts might interfere with the production of thyroid hormones.
Depending on where the sea moss is from, there is also a greater risk of heavy metal contamination. For these reasons, moderation is best. For most people, this probably won't be an issue as sea moss is an acquired taste and texture.