Let me give you one simple example: you can find magnesium oxide at those stores, which is the worst form of magnesium on the market. For similar amount of mone

Let me give you one simple example: you can find magnesium oxide at those stores, which is the worst form of magnesium on the market. For similar amount of money though you can buy magnesium glycinate, orotate, malate, taurate, and other chelated forms of magnesium that absorb better, have additional benefits, and save you the digestive system discomfort. Of course, the best prices and convenience (autoship) is available online, of course, plus, most stores offer additional 5-20% discounts. I can add a lot more examples of the various forms of vitamin E, B vitamins, vitamin D, vitamin K, folate/folic acid, vitamin A, etc. The formulation of the mass market brands are not only worse in terms of absorption, but are often harmful like folic acid and vitamin A. Even basic supplements like calcium not taken with vitamin K and D3 and dangerous, but anyway. There was a recent study that omega-3 EFAs increase prostate cancer risks, which was so poorly conducted that it's not even funny! There are many people with hidden agendas in "science" and especially when it comes to nutrition, it's not hard to engineer a study that will give you the desired outcome. It's been done many times in the past, Big Pharma is on a war against supplements, so, take all these with a grain (or chunk) of salt!