As we get older, our bodies produce lower levels of regulatory hormones like estrogen and testosterone. (wallerwellness.com)
And, key regulatory hormones, such as insulin, are also proteins, as are many important molecules in our immune system and cell transport and messaging molecules. (heynutritionlady.com)
Around 4 am, counter regulatory hormones surge and insulin is also released to counter this. (idmprogram.com)