The throughput of the liver for many of the enzymatic reactions that it performs, either for converting harmful chemical compounds into harmless substances, or

The throughput of the liver for many of the enzymatic reactions that it performs, either for converting harmful chemical compounds into harmless substances, or for generating some conditionally-essential nutrients from precursors present in food, decreases in older people. Because of this, when older, one should pay more attention to observing a healthy diet, which contains smaller amounts of harmful substances (e.g. alcohol) and enough quantities of all nutrients, including those that can be produced by a human body, but in insufficient quantities in older people (e.g. long-chain omega-3 fatty acids).