In a 2007 study, adults ages 55 to 87 had lower plasma zinc and higher oxidative stress and inflammatory markers compared to younger adults. (verywellhealth.com)
In fact, plasma zinc only makes up about 0.1 % of the zinc in the body. (wellnessmama.com)
Patients with hypothyroidism may have impaired intestinal zinc absorption and lower levels of plasma zinc (4,5). (progressivehealth.com)