magnesium supplements benefits people livng with PCOS as well as women who do not have PCOS.

My favorite magnesium is BioOptmizers Magnesium Breakthrough/ You can buy it here:
https://bit.ly/3TGFzrv
*affilate link
I love it because it helps me sleep better than I have in years. Seriously!!!

References
Facchinetti F, Borella P, Sances G, Fioroni L, Nappi RE, Genazzani AR. Oral magnesium successfully relieves premenstrual mood changes. Obstet Gynecol. 1991 Aug;78(2):177-81. PMID: 2067759.

Barbagallo M, Dominguez LJ. Magnesium and type 2 diabetes. World J Diabetes. 2015 Aug 25;6(10):1152-7. doi: 10.4239/wjd.v6.i10.1152. PMID: 26322160; PMCID: PMC4549665.

Jacka FN, Overland S, Stewart R, Tell GS, Bjelland I, Mykletun A. Association between magnesium intake and depression and anxiety in community-dwelling adults: the Hordaland Health Study. Aust N Z J Psychiatry. 2009;43(1):45-52. doi:10.1080/00048670802534408

Abbasi B, Kimiagar M, Sadeghniiat K, Shirazi MM, Hedayati M, Rashidkhani B. The effect of magnesium supplementation on primary insomnia in elderly: A double-blind placebo-controlled clinical trial. J Res Med Sci. 2012 Dec;17(12):1161-9. PMID: 23853635; PMCID: PMC3703169.