Clearly, as anyone undertaking training knows, it takes time to get one's body into really great shape. Supplementation therefore needs time for the benefits to work fully into the system. Fourthly, it is worth bearing in mind that nutrients work synergistically. A balanced intake is therefore important so that each nutrient can work to best effect. Fifthly, each of us has our own biochemical individuality.
Nutrient needs differ from person to person, just as one person is different from the next.
A 'one size fits all' approach to diet and supplementation has obvious limitations. Depending upon whether we are male or female, young or old, couch potato or Olympic athlete, employed or unemployed, stressed urban dweller or happy rustic, each of us needs to evaluate at our own individual condition and lifestyle needs. On the law of averages, recommended dietary allowances for specific nutrients may be fine as a general guideline but each individual should adapt their nutritional intake according to their personal requirements. Warnings and precautions These days anything manufactured for human consumption must conform to stringent regulations. The supplement manufacturers are therefore most careful to state clearly on their products any warnings that should be heeded or precautions that should be taken.