I eat what I want to, and take no notice of what we are told we should eat, as for being told we must take vitamins etc for our health. -- what is wrong with our food intake that we must have extra vitamins in the form of pills.
To het the amount of fish oils you need in one day, you would need to eat 20 tins of salmon. Do you do that ??? We can eat the healthiest diet, but still be deficient in vitamins. I know that as a child, I was eating red meat almost every day, but was still deficient in iron and had to take supplements. Most people are deficient in vitamin D3 despite living in one of the sunniest countries in the world. People who are lactose intolerant would be deficient in calcium unless they have supplements, because they don't drink milk or have dairy. They are at very high risk of osteoporosis. Vitamin D cannot be absorbed without the presence of calcium. Think about it. You must have certain levels of vitamins and minerals in the body daily for chemical processes to take place, and for optimum health. It is impossible to get these amounts from diet alone, even if you eat the best diet possible, and I don't know anyone who eats the best diet possible. Then there are other things like illness which affect the levels of vitamins and minerals in the body and their absorption. Chemo and other things also affect this. Vitamins and minerals need replacing every day. People on low fat diets need essential fatty acids to absorb vitamins A, D, E and K. On low fat diets, they may not get these absorbed properly, or at all. Water content in the body, too much or too little will affect the absorption of vitamins B and C. So much evidence and scientific proof to disprove what you just said.