Supplements are pointless. No-one knows exactly how much of any of the vitamins and minerals you need. The requirements fluctuate depending upon too many factors.
I don't why anyone would bother. They probably do you as much harm as good.
If you get enough sun and eat the right food, the vitamins and minerals sort themselves out.
Supplements of vitamin D are a poor substitute for the real thing. Everyone should be able to spend at least some time outside most days of the year.
'But our ground is all depleted of vital nutrients' is kind of a useless comment when you can't show how much of each we need in the first place. I don't see how anyone can proclaim that current farming land is not producing enough of something.
Most multivitamins just give you more of everything than you should require, however:
• About 50% of multivitamins do not actually contain the amounts listed
• Too much vitamin A can cause bone weakening and liver abnormalities
• Some mutivitamins do not dissolve in the correct amount of time, meaning they could potentially pass through the body without being fully absorbed.
• Some multivitamins are contaminated with other ingredients (like lead)
• Large concentrations of vitamin E, zinc, selenium, iron and vitamin D can cause an unsafe amount of calcium to collect in your blood.
• 11% of vitamin users exceed safe levels of niacin intake, putting them at potential risk for liver problems."
• No studies have shown that people benefit from taking multivitamins and mineral supplements.
• Vitamin E has been found to increase risk of heart failure and cancer when people take anything more than 400 IUs a day.
• Vitamin A can cause birth defects in high doses so it's potentially hazardous for women who may become pregnant. A 2002 Harvard study of more than 72,000 nurses showed that high doses of vitamin A led to a higher risk of hip fractures
• etc, etc...
When you look at all the literature, it appears that the levels of vitamins in our ancestors' diet was optimal. We can best recreate that by eating a balanced diet supplemented by a multivitamin. </blockquote>
Dr David Katz
The "Seven Deadly Sins"
• Grains (wheat/rice/oats etc) . . . . . • Dairy (milk/yogurt/butter/cheese etc) . . . . .• Nightshades (peppers/tomato/eggplant etc)
• Tubers (potato/arrowroot etc) . . . • Modernly palatable (cashews/olives etc) . . . • Refined foods (salt/sugars etc )
• Legumes (soy/beans/peas etc)