Eight substances make up the vitamin B complex, including thiamine, riboflavin, niacin, pantothenic acid, biotin, folic acid, vitamin B6 and vitamin B12. Poor absorption of these substances can result in diseases caused by vitamin B deficiencies, like beriberi, pellagra and pernicious anemia.

B vitamins help your body generate energy from the foods you eat and assist with the formation of red blood cells. A lack of certain B vitamins, specifically B-12 and B-6, can lead to diseases such as anemia, respiratory infections and eczema.

Low-carb diets help you shed pounds rapidly in the first few weeks, but you aren't magically dropping fat. A reduction in carbohydrates and an increase in protein causes your body to lose excess water weight naturally.

Preventing nausea from protein shakes may require some detective work to learn what's triggering your queasiness. Cutting calories excessively, pregnancy, food poisoning, lactose intolerance, food allergies, exercise and certain medical conditions, medications or medical treatments can cause nausea.

Iron deficiency anemia is the most common nutritional disorder in the world, according to 2001 information listed by the Office of Dietary Supplements. It can leave you feeling tired, decrease your ability to concentrate and lower your immune function.

Although peanut butter is loaded with essential nutrients and can benefit your health, eating too much peanut butter is often problematic because of its fat and calorie content. The amount of peanut butter you should eat daily depends on your total daily calorie needs and weight-management goals.

Cauliflower belongs to the group of vegetables called cruciferous or brassica vegetables which includes broccoli, Brussels sprouts, cabbage, kale, rutabaga and turnips, among others. Cauliflower doesn't rank among America's favorite vegetables; Americans consumed just 2 lbs.

Juicy and sweet, pineapple can be eaten fresh or cooked, and blended to make an all-natural fresh juice. To make fresh pineapple juice, blend a 1-cup serving of pineapple chunks with one-half-cup of water for an 8-ounce serving of pineapple juice.

Whey protein is one of the best types of proteins you can consume for muscle building because it contains essential and branched-chain amino acids.

The dietary guidelines from the U.S. Department of Agriculture's MyPlate website suggest people to eat several servings of grains each day -- six ounces for women and seven for men to be exact. Adding corn tortillas to your diet helps you reach your daily recommended intake.

When you hit the pavement -- or the treadmill, if you prefer running indoors -- you want to give your muscles and tendons all the fuel they need to maximize your running performance.

Emergen-C is a powdered drink mix containing a variety of vitamins and minerals. Even though Emergen-C is sold over the counter and is generally safe, side effects such as gastrointestinal problems, gluten reactions, poor drug interactions and allergic reactions could occur.