Showing posts with label whey protein. Show all posts
Showing posts with label whey protein. Show all posts

Tuesday, May 27, 2008

High-quality protein continue...

Soya's starring role

Soya is another star player on the protein front, and although it doesn't have as high a BV as whey protein, meat, fish or eggs, it has a multitude of health benefits which more than justify its inclusion in a low-carb diet; and it is a great vegetarian option.

Soya contains all-important isoflavones, which can reduce insulin levels, decrease arteriosclerosis (thickening of the arterial walls) and lower levels of LDL (Low-Density Lipoproteins, or poor cholesterol). It has also been shown to reduce the risk of osteoporosis (softening of the bones), increase bone mass and enhance the body's ability to retain calcium.

Diet Start

Soya is also of particular benefit to women, as the isoflavones it contains mimic the action of the female sex hormone oestrogen. It is believed that a diet high in soya can reduce the density of breast tissue, therefore lowering the risk of developing breast cancer.

Make it organic

The quality of the meat and fish we consume has dropped dramatically during the last century. Gone are the days when we were eating meat that came from animals allowed to graze freely on nutritious grass, and fish caught inunpolluted rivers and seas. Today, most farm animals are fed on grains that are high in carbohydrates and omega-6 fatty acids, then pumped full of antibiotics and hormones. And fish are being farmed in restrictive conditions, rendering them more fatty than their wild counterparts.

The only real answer is to buy the best that you can afford - the organic option being the healthiest and most nutritious. Organic is better because the quality of the food is better. It isn't loaded with drugs and hormones, isallowed to graze naturally, and quite often comes from wild sources, so that the level of omega-3's is higher, levels of saturated fats lower.

Protein Q&A

Q. Where does whey come from?

A, Whey comes from milk. During the process of turning milk into cheese, the whey protein is separated from the curds.

Q. Why use whey?

A. It contains the perfect combination of amino acids, in just the right concentrations for optimal performance in the body. Both hormonal and cellular responses seem to be greatly enhanced by whey supplementation. If you are trying to increase muscle mass, whey protein is invaluable in building and retaining muscle tissue.

Q. How do I know how much protein I need?

A. Easy-just follow these simple calculations. If you are sedentary you need 0.8g protein per kilogram of bodyweight (0.36g per pound of bodyweight). If you are active, you need 1.4g protein per kilogram of bodyweight (0.64g per pound of bodyweight). So a woman weighing 63kg (1401b) who exercises needs 88.2g of protein per day. A woman weighing 63kg (140Ib) who isn't active would be fine on 50.4g of protein per day.

Q. Can I have all my protein in one meal?

A. No, it is best to spread it out over the day, so divide it between your three meals and two snacks. You can do this by having eggs at breakfast, a portion of nuts for your morning snack, some fish at lunchtime, a whey protein shake as an afternoon snack, and finally by including a piece of lean meat in your evening meal.

High-quality protein

Our bodies are composed mainly of protein, which (after water) is the most abundant substance in the body. It is the major constituent of our muscles, tissues, skin, hormones, enzymes, antibodies and blood. Even after childhood protein plays a vital role in maintaining and rebuilding our bodies as they cope with the wear and tear of daily life.

Proteins are broken down by the process of digestion into units called amino acids, and the body requires 22 amino acids to form human protein. All but nine can be produced in the body. These nine are known as 'essential amino acids' and have to be provided in the diet. Foods that contain all nine are termed 'complete proteins', and they include meat, fish, dairy and soya protein. Fruit, vegetables, grains and pulses are 'incomplete proteins' and have to be carefully combined to provide sufficient amino acids in the diet.

Diet Start

Protein is fundamental to rebalancing blood-sugar levels, because it encourages production of the hormone glucagon, which helps the body to release stored glycogen for energy and encourages the burning of fat. Glucagon also helps to balance excess insulin production.

What is Biological Value?

In order to be efficient, protein foods have to be of a high quality and have what is termed a high Biological Value (BV) — this indicates how much of theprotein is retained by the body. Eggs used to be classed as having the highest BY, but micro-filtered whey, whey-peptide blends and lactalbumin (whey- protein concentrate) are even higher. Micro-filtered whey protein used to be a useless by-product of cheese manufacturing. Now it is processed at very lowtemperatures and turned into a protein source with a very high BV that contains all essential and non-essential amino acids.

The only whey to go

To maintain a healthy immune system, blood, skin and muscles, you need to consume protein with a high By. Whey protein (which is derived from milk, see Q&A opposite) is an excellent supplement that has long been used by bodybuilders and athletes alike. It has many uses in a dietary regime:

¨ It encourages the formation of lean muscle mass

¨ It increases glutathione levels, which has great antioxidant and immune- boosting properties

¨ It helps to build healthy new collagen

¨ It provides an invaluable source of protein for vegetarians who are attempting to balance their diets

¨ It is a quick and easy way of having a high-protein meal or snack

¨ It can be incorporated into recipes as a replacement for carbohydrate ingredients.

There are a multitude of whey products on the market — some better than others. Many come in sweet flavours, which are great when making shakes and smoothies, but you need to source natural, unflavoured products if you want to incorporate whey-protein powder into savoury dishes such as soups. These are widely available through health-food stores and on the Web. Just make sure you don't confuse them with slimmer's meal-replacement powders, which are usually laden with carbohydrates.

The average serving of whey protein is a 25g (1 oz) scoop, but check on the label to see how much of that scoop comprises protein: the lower the protein content, the higher the carbohydrate content. And beware of `blends': these are likely to be bulked up with milk and soya derivatives. To get the best out of your whey products, go for the highest protein concentration possible.

... andjoyohoxing