Powerful Nutrition
Prepared protein shake mixes and bars are ideal for losing weight, expanding personal energy or building muscle.
Protein mixes are available in an assortment of flavors that are generally high in amino acids (protein building blocks) and low in carbohydrates. Of course if you are on a low-carb diet, forsake putting fruits and vegetables in your shakes; these items are too high in carbohydrates.

What's more, bars not only provide a wealth of different tastes, but different bars are also tailored to different needs-whether you're seeking to lose weight, gain muscle or replace a meal, there's a bar out there just for you.

If you use power shakes as meal replacements and you are on a low-carbohydrate diet, make sure the drink supplies plenty of protein and few carbohydrates. If you use either shakes or bars to replace one or more meals during the day, take a fiber supplement in addition. Fiber, which contains no calories, helps speed food through your digestive tract and may lower your risk of heart disease and cancer (Lancet 5/2/03).

And remember: powders and bars should also be low in sugars and saturated fats. The weight-loss benefit: If you drink high-protein shakes or eat bars that taste good and leave you feeling satisfied, you'll have a better chance of sticking to your diet long enough to lose a significant amount of weight.

Drink to Lose
Research into weight loss has established protein shakes and bars as reliable diet aids. A study of 100 dieters between the age of 35 and 65 found that people who drank a daily soy protein shake lost more than 14 pounds each in three months (Eur J Clin Nutr 2003; 57:514). And in a study reported in the Journal of American Dietetic Association (3/01), folks who had a protein shake in place of one daily meal lost almost twice as much weight over 12 weeks than those who ate their regular food with the same amount of calories.

Drinking your breakfast in the form of a protein shake can both increase your metabolism and help curb your appetite for the rest of the day.

Researchers at Harvard University found that metabolism rose faster after eating a high-protein breakfast and that blood-sugar levels stayed high for about six hours after the meal (AHA Annual Conference on Cardiovascular Disease Epidemiology and and Prevention, 3/6/03). In comparison, when a sugary breakfast is consumed, blood-sugar levels rise quickly but fall rapidly, causing fatigue, tiredness and sleepiness.

Protein shakes are especially effective when you are on a weight-loss plateau, trying to lose those last few tenacious pounds. (But shakes, smoothies and bars should not be your only meals of the day. Eat at least one low-calorie meal daily to supply nutrients that may not be in your shakes or bars.)

Smoothie Operator
Made with fruits and vegetables, smoothies are a tasty way of getting extra amounts of nutrients and soluble fiber. Using low-fat milk, yogurt, buttermilk or kefir, plus ice, creates a tempting and wholesome blend that lights up the taste buds. Powdered mixes can be used for added protein.

Fruits and vegetables in your smoothies not only fill you up on relatively few calories, but they boost your energy and supply plenty of bioflavonoids (healthy, natural chemicals from plants), antioxidants, vitamins and minerals.

The fiber in smoothies can help reduce cholesterol, relieve constipation and aid in the prevention of high blood pressure. For reduced calories and added heart health benefits, low-fat or no-fat milk products can be used in place of cream or regular milk in most recipes. For the best taste sensation, combine sour and sweet fruits together.

Adding raw fruits and vegetables to smoothies provides natural enzymes that help with digestion and act as catalysts in hundreds of chemical reactions throughout the body. (You can also take enzymes in supplemental form.) Enzymes are not present in cooked foods since the heat of cooking destroys them.

Nutrition for Kids
If you have trouble getting your children to eat their fruits and vegetables, try giving them smoothies. Children can't resist these naturally sweet and healthy creations.

According to Sally Fallon, author of Nourishing Traditions (New Trends Publishing), smoothies should be "high in quality, contain healthy fats, be naturally sweet, and contain fresh seasonal fruits and vegetables."

Fallon also believes children should consume what are called lacto-fermented foods, including yogurt and kefir, which are aged to contain the kinds of friendly bacteria that normally live within our digestive tracts. For kids, Fallon also encourages the use of cream or cultured milk to ensure adequate fat and calcium, so important for the development of growing bodies.

Smoothies are an interactive drink as far as children are concerned, since they love to help blend them. For extra nutrition power, add nutritional yeast, nut butters or ground flaxseeds. These supply additional vitamins and minerals, along with healthy fats. You can also add silken tofu to bump up the protein content. If your child is lactose intolerant, try mixing smoothies with rice milk, soy milk or juice.

Bars Designed With A Woman's Needs in Mind
The modern woman is a multitasking wonder, constantly juggling work and home responsibilities. So it's no wonder that bars aimed at women are among the most popular bars there are. Many women, in eyeing the bathroom scale, shortchange themselves of the nutrients they need. That's why a woman's bar needs to provide minerals like calcium, a bone-building necessity.

Women also need to ensure that a bar contains enough of the B vitamins, particularly folate. This is especially true if a woman is pregnant, or wants to be: Folate is crucial in helping to prevent neural tube birth defects.

Folate also teams up with two other B vitamins, B6 and B12, to control homocysteine. This protein metabolism byproduct, when present in excessive amounts, is associated with heart disease.

Another popular ingredient in women's bars is soy, which has been duly recognized for its heart benefits. Studies also indicate that soy may help keep bones strong. (Not to mention the fact that the moisture soy holds helps make a bar's texture that much more appealing!)

The Protein Game
If you are unsure about how much protein you need each day, you are not alone. Are you getting too much, not enough, or just enough? Most people need between 45 and 60 grams of protein daily, and most protein shakes contain about 14 and 20 grams of protein per serving (check your labels).
No matter what your nutritional needs are, you may find an answer in a smoothie, shake or bar. When it comes to power nutrition, tasting is believing!