Cholesterol, which is a fatty substance found in many foods, is absorbed by the body then transferred from the liver to be stored by tissue as fat. This is carried through the bloodstream by molecules known as LDL (Low Density Lipoproteins). When the LDL is oxidized, it reacts to the cholesterol and a fat substance known as plaque begins to get deposited on the artery walls, which causes the blood flow to stop. Even though you can look for vitamins that provide energy, it would be in your best interest to find those that can be effective with fighting fatigue as well. There are vitamins, nutrients, and supplements that are great for fighting fatigue and helping the body stay alert. The vitamin known as NADH is very powerful for energy, although many people aren t aware of it. Also very effective with improving circulation, B3 niacin can also help to reduce cholesterol levels found in the blood. Even though vitamin B3 niacin is great as a stand alone supplement, it should also consumed with foods that contain protein, due to the fact that the body is able to convert the amino acid known as tryptophan into niacin. If you start to have any of the above problems, you should immediately contact your doctor. When you contact your doctor, you should let him know if you are taking any other medications, and any histories of illness or diseases your family may have. Although anyone can take calcium supplements, there are rare cases in which they may cause you side effects. Over the years, studies have shown that fruits and vegetables which are organically grown are high in antioxidants, and boast a much higher concentration than those that have been produced commercially. In the busy world of today, it can be very tough to eat like we should, nor can we eat organic fruits and vegetables all the time. If you visit your doctor and tell him the problem, he will probably recommend vitamins and supplements that will give you want you need. Whatever you do, you should never overdo it and try to catch up on what you ve been missing - as this will do you more harm than good. Even though you may be following a healthy diet, you ll still need to take vitamins and supplements.