All of us suffer from tummy trouble at some point in our lives.  Let's first take a look at how the digestive system works.  The digestive tract is a series of hollow organs—the mouth, esophagus, stomach, small intestine, large intestine (colon), rectum, and anus—through which food and liquids pass and are absorbed or eliminated. Along the way, two solid digestive organs, the liver and the pancreas, add digestive juices. These juices help break down food into nutrients that can be absorbed by the body. Another organ, the gallbladder, stores bile between meals. Bile is the digestive juice produced by the liver that helps digest fats. At mealtime, the gallbladder empties bile into the small intestine. Most nutrients in digested food are absorbed through the walls of the small intestine and travel through the bloodstream to other parts of the body. There, they are used to build and nourish cells and provide energy. Waste products, including the undigested parts of food known as fiber, leave the body through a bowel movement.

Did you know that 60 to 70 million Americans suffer from digestive diseases of one kind or another? Nutritional professionals predict that most American adults get only about half of the 20-35g of fiber daily that we need for good health. You may know that the primary function of the digestive tract is to break down the food we eat so that it can be used as fuel by the body. What is less well-known is the importance of the GI (gastrointestinal) tract to your immune system and your total body's health. In fact, the GI tract is often referred to as the body's "second line of defense" against potentially harmful pathogens that cause disease (the first defense being the skin!).

Digestive problems can range from mild to severe. You can overcome many problems by making simple lifestyle changes—watch what you eat, maintain a healthy weight, learn to deal with stress, and if you smoke, quit.  Gee this sounds like a healthy lifestyle.  Sometimes we take for granted how just simply taking care of our body and eating healthy can make our lives more enriched

Wow! What a topic this one turned out to be.... age and gender seem to be the biggest issue.  So what I am going to do is lay out specific facts and let you decide what is best for your body! 
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The common denominator was a multivitamin almost all experts and studies recommended taking a multivitamin.  With that said, there are multivitamins for men and women and children too! They are different dosage of various vitamins, there are also multivitamins for over 50.  Another interesting fact is men don't need extra calcium, and high intake might increase the risk of prostate cancer.  Women receiving vitamin E experienced a statistically significant 24 percent reduction in total cardiovascular disease mortality.

Fish oil was another common vitamin.  Some studies have found fish oil, which contains omega 3 fatty acids, can help lower triglyceride levels, lower blood pressure, and help depression, among other uses.  Some take a B6 or B12 for weight loss and energy, if you are taking folic acid, which is a B vitamin, you'll do better when you also take the other Bs that make up the B complex.  That's how nutrients occur naturally and how the body best utilizes them, so take a B complex (I do everyday) not just one B vitamin.

Postmenopausal women almost never need iron, and taking too much might pose a risk for heart health. 

 More than 150 million Americans take dietary supplements according to the Council for Responsible Nutrition, a supplement industry trade group.  They all take at least two supplements -- some take three or four or more.  The Journal of the American Medical Association, also found that vitamin E even appeared to raise the risk of bleeding strokes, which, while rare, are often the most deadly. 

The experts also agree that taking vitamins is only part of the larger puzzle. You also need to watch your diet and exercise.