Dietary Food Supplements Essays - Health, Nutrition, Personal Life

Dietary Food Supplements There are so many dietary food supplements out on the market today. Most of them cause side effects that cause these products to rust on the shelves. Others actually work, it just depends on the person. Some of these supplements claim to be a fat absorber that you take before you eat which makes you absorb less fat in your body. Others claim to make you not hungry which is not healthy at all. You cannot survive without food. You should think of your body as a car, without fuel it cannot go. If you buy one of the many fitness magazines including: "Fitness", "Shape" or "Oxygen" many of the pages contain weightloss supplements. One supplement is "Xenical." When you combine this pill with a good meal, it may help you loose weight. A good meal is consisted of grilled chicken and vegetables, a nutritionally balanced meal. This is an effective product if you are thirty or more pounds overweight. Well, if you are that overweight and you begin to eat a good meal, then of course you will loose the weight without Xenical. You also have the weightloss supplement that helps you build muscle as you work out. There are pills, shakes, bars, they come in all different types. "ProV60" is a powder that you mix with a liquid. It is a high protein, low carbohydrate food supplement. It basically robs your body of the carbohydrates that you need to function. Another product is "Thyrolean." This product is made to make you loose pounds beyond a certain threshold. The set point theory states that your body is genetically made to weight a certain weight and your body will fight to maintain that weight, you cannot change this weight. In other words this product is messing with your genetics. If you are going to try one of these dietary products, I would first consult your doctor. There are so many side effects and so many of these products are not good for your body. The best way to tell I by trail and error, but you may mess your system up. Some of these dietary products contain things that you should not be putting into your body, or they contain not enough of the nutrients that you need. One of the best things that you can do to loose weight is to exercise several times a week and eat healthier.

What Makes Aphid Reproduction So Efficient

What Makes Aphid Reproduction So Efficient Aphids thrive by the sheer force of their numbers. Their secret: Because just about every insect predator looks at them as an appetizer, their only chance of survival is to outnumber them. If aphids are good at one thing, its reproducing. Consider this fact from entomologist Stephen A. Marshall in his book Insects: Their Natural History and Diversity​: In optimal environmental conditions and lacking any predators, parasites, or disease, a single aphid could produce 600 billion descendants in one season. Just how do these tiny sap suckers multiply so prolifically? They can change the way they reproduce and how they develop as environmental conditions change. Aphids Can Reproduce Without Mating (No Males Needed!) Parthenogenesis, or asexual reproduction, is the first key to an aphids long family tree. With few exceptions, aphids in spring and summer are all females. The first wingless matriarchs hatch from eggs in early spring (from eggs laid late the prior year to overwinter), equipped to reproduce without the need for male mates. Within a few weeks, these females produce more females, and soon after that, the third generation arrives. And so on, and so on, and so on. The aphid population expands exponentially without a single male. Aphids Save Time by Giving Birth to Live Young The life cycle goes much quicker if you skip a step. Aphid mothers are viviparous, meaning they give birth to live young during the spring and summer, rather than laying eggs during these seasons. Their offspring reach reproductive maturity much sooner since they dont have to sit around waiting to hatch. Later in the season the females and males both develop.   Aphids Dont Develop Wings Unless They Need Them Most or all of an aphids life is spent feeding on a host plant. It doesn’t need to go very far, so walking suffices. Producing wings is a protein-intensive task, so aphids wisely conserve their resources and their energy and remain wingless. The aphids do quite well in their apterous state until food resources run low or the host plant gets so crowded with aphids that the group must disperse. Only then do they need to grow some wings. When the Going Gets Tough, the Aphids Get Going High populations, which occur quickly in light of the aphids prolific reproduction, lead to less than optimal conditions for survival. When there are too many aphids on a host plant, they begin competing with each other for food. Host plants covered in aphids are rapidly depleted of their sap, and the aphids must move on. Hormones trigger the production of winged aphids, which can then take flight and establish new populations.   Aphids Adapt Their Life Cycle to Environmental Conditions All would be for naught if the aphids in cold climates just froze to death at years end. As days become shorter and temperatures fall, aphids begin producing winged females and males. They find suitable mates, and the females lay eggs on perennial host plants. The eggs will carry on the family line, producing next years first batch of wingless females.