hi taurushead, I think i get where your coming from! It depends what nutrient youre talking about cos different nutrients can be stored for different amounts of time. For example the fat soluble vitamins (A, D, E and K) can be stored for quite a long period of time whilst the water soluble vitamins arent stored in the body efficiently, and any excess amounts consumed are excreted. Thats why toxicity is more of a problem with the fat soluble vitamins and deficiency occurs more quickly with water soluble vitamins if they arent consumed in adequate amounts. But having said that, if you dont consume a certain vitamin every day you wont become deficient immediately! Was there any nutrient in particular that you are concerned about? I hope what i said makes sense!