Zinc is a cofactor in more than 300 enzymatic reactions. Immune function, skin repair, testosterone production and cognitive processing all depend on adequate status. Modern diets that lean heavily on refined grains and low-quality protein are commonly zinc-insufficient, which is why supplementation moves the needle for many people.
The picolinate form is chelated with picolinic acid, which is what your gut naturally uses to move zinc across the intestinal wall. That gives it better absorption than cheap zinc oxide or sulfate at the same milligram number. 15 mg is a practical daily dose that supports status without pushing into copper-antagonism territory over long-term use.
