Committing to a low-fat lifestyle means making some changes in our kitchens. But what do we mean by a low-fat kitchen? Basically we mean replacing high-fat foods with low-fat foods. So yes, those double-stuff sandwich cookies should be tossed, along with that extra-butter popcorn. But don’t despair, there are so many low-fat products available these days, alternatives are pretty easy to find. So what should we choose and lose?Low Fat Doesn't Mean No FatWe need certain fats (essential fatty acids), so a low-fat diet doesn't mean a no-fat diet. Also, just because a food is low-fat doesn't mean it's healthy or less fattening. It may be high in sugar which is not good for your health or weight. So whenever possible, choose low fat brands that are also low in sugar.The Science of low-fat dietThe calories we consume come from carbohydrates and fats. Carbohydrates release 4kcal per gram whereas fats are calorie dense and release 9kcal. The excess unused calories deposit in the body as fat. Scientists believe that calories from fats are more likely to convert into body fat than calories from carbs. It implies that a restriction of fat in the diet would supply fewer than the required calories to the body. The body would then depend on its fat stores to correct the balance, resulting in weight loss. Overweight people, intending to lose weight, benefit from low fat diets. The weight loss is gradual and easily maintained thereafter.Low fat diets are healthyModerate fat restriction is healthy for various reasons. Fats are carriers for many fat-soluble vitamins that are essential to the body; fat free diets may be lacking in these. Certain fats like polyunsaturated fats are heart friendly as they increase levels of good cholesterol. Fats act as insulators and provide a cushioning effect around the body organs.Conclusion:Low fat diets and exercise have been proven to be effective weight loss strategies. Programs that use these two strategies are on the right track to helping individuals lose weight, and will at least provide a more healthy lifestyle for clients, even it weight loss is not accomplished. There are no negative side effects from eating a low fat diet and exercising regularly, unless they are abused and taken to extremes, in which case the principle of the strategies is lost and no benefits can be expected. When used correctly low fat diets and exercise can prevent disease and high blood pressure, and be an asset to attempted weight loss.