**7. Conclusions**

Seaweeds include a wealth of bioactive compounds that could be used to develop novel functional ingredients for food as well as a therapy or prevention strategy for chronic diseases. Seaweeds could be an alternative source for synthetic substances that may help to increase consumer well-being via being incorporated into new functional foods or medications, as consumers have recently paid a lot of attention to natural bioactive compounds as functional ingredients in foods (Figure 11). However, because of the probable presence of hazardous pollutants such as heavy metals or their high iodine content, seaweed eating must be accompanied with an understanding of the hazards to human health. Because of the presence of numerous of innovative bioactive substances with potential anti-disease activities, using green extraction or purification processes of compounds from complex seaweed matrix is a viable or logical strategy for avoiding these health-related issues or creating added-value functional products.

**Figure 11.** A summary for the bioactive compounds that have different biological activities and used in different applications. Adapted from ref. [384] obtained from mdpi journals.

**Author Contributions:** Conceptualization, H.S.E.-B., A.A.M., H.I.M., K.M.A.R., A.A.B. and A.T.M.; software, H.S.E.-B., A.A.M., H.I.M., K.M.A.R., A.A.B. and A.T.M.; validation, H.S.E.-B., A.A.M., H.I.M., K.M.A.R., A.A.B. and A.T.M.; investigation, H.S.E.-B., A.A.M., H.I.M., K.M.A.R., A.A.B. and A.T.M.; resources, H.S.E.-B., A.A.M., H.I.M., K.M.A.R., A.A.B. and A.T.M.; data curation, H.S.E.- B., A.A.M., H.I.M., K.M.A.R., A.A.B. and A.T.M.; writing—original draft preparation, H.S.E.-B., A.A.M., H.I.M., K.M.A.R., A.A.B. and A.T.M.; writing—review and editing, H.S.E.-B., A.A.M., H.I.M., K.M.A.R., A.A.B. and A.T.M.; visualization, H.S.E.-B., A.A.M., H.I.M., K.M.A.R., A.A.B. and A.T.M.; supervision, H.S.E.-B., A.A.M.; project administration, H.S.E.-B. and A.A.M.; funding acquisition, H.S.E.-B. and A.A.M. All authors have read and agreed to the published version of the manuscript.

**Funding:** 1—Deanship of Scientific Research, Vice Presidency for Graduate Studies and Scientific Research, King Faisal University, Saudi Arabia (Grant 402). 2—Deanship of Scientific Research at Umm Al-Qura University, Saudi Arabia (Grant Code: 22UQU4361052DSR01).

**Data Availability Statement:** All data available in the review.

**Acknowledgments:** The authors acknowledge the Deanship of Scientific Research, Vice Presidency for Graduate Studies and Scientific Research, at King Faisal University, for the financial support, under (Grant 402). Furthermore, we thank Deanship of Scientific Research at Umm Al-Qura University for supporting this work by Grant Code: 22UQU4361052DSR01.

**Conflicts of Interest:** The authors declare no conflict of interest.
