All about Diet

Mankind fills no container worse than he fills his stomach.

In the past most illness was mostly the result of a lack, such as warmth, food etc. Now it is mostly due to excess and in particular excess of the wrong food or food in general.


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Grapefruit Diet

There are several diets or approaches to dieting that have been referred to as the “grapefruit diet.” The first two are fad diets that have been circulating via chain letters, photocopies, faxes, and e-mail since the 1930s. The third form might be better described as the regular use of grapefruit or grapefruit juice as part of a general approach to weight reduction. It received considerable attention following the 2004 publication of a study conducted at the Scripps Clinic in California.

Very low-calorie grapefruit diet plan

The basic menu plan is the same for each day of the week:

  • Breakfast: 1/2 grapefruit +2 slices of bacon +2 boiled eggs +black coffee (no sugar) or unsweetened tea.
  • Lunch: 1/2 grapefruit +1 cup of salad with low-calorie dressing +8 ounces of lean chicken or water-packed tuna fish +black coffee (no sugar) or unsweetened tea.
  • Dinner: 1/2 grapefruit +as much salad with low-calorie dressing as desired +8 ounces of lean chicken, lean beef, or fish +black coffee (no sugar) or unsweetened tea.
  • No snacks are allowed, and the only seasonings permitted for the meat or fish are herbs; no soy sauce, mustard, catsup, or other condiments are allowed.

The dieter is supposed to follow this diet for 12 days, then take two days off, and repeat the two-week cycle indefinitely.

High-protein grapefruit diet plan

This version of the grapefruit diet has been described as “just plain weird” because it comes with a curious set of rules as well as lists of foods that the dieter may or may not have. It also promises a weight loss of 52 pounds over 2-1/2 months.

“The Rules”:

  • You must drink eight 8-ounce glasses of water every day (64 ounces total).
  • At any meal you may eat until you are full.
  • You must eat the minimum of each food listed at each meal.
  • You cannot eliminate any item from the diet, especially the bacon at breakfast and the salads. You MUST eat the bacon and the salads. These combinations of food burn the fat; omitting one part of the combination will cause the whole thing not to work.
  • The grapefruit or fruit juice is important because it acts as a catalyst that starts the burning process. Don’t add to or reduce the amount of grapefruit or juice.
  • Cut down on coffee because it affects the insulin balance that hinders the burning process. Try to limit yourself to 1 cup of coffee at meal time.
  • Don’t eat between meals. If you eat the suggested foods, you will not get hungry.
  • You can fry food in butter and use generous amounts of butter on the vegetables.
  • Do not eat desserts, bread, or white vegetables or sweet potatoes.
  • You may have double or triple helpings of meat, salad, or vegetables.
  • Eat until you are stuffed. The more you eat, the more weight you will lose.
  • Stay on the diet 12 days, then stop the diet for 2 days and repeat.

The daily diet plan:

  • Breakfast: Either 1/2 grapefruit or 8 ounces of unsweetened fruit juice (any fruit) +2 eggs any style +2 slices of bacon.
  • Lunch: Either 1/2 grapefruit or 8 ounces of unsweetened fruit juice (any fruit) +salad with any dressing +meat any style and any amount.
  • Dinner: Either 1/2 grapefruit or 8 ounces of unsweetened fruit juice (any fruit) +salad with any dressing or a red or green vegetable cooked in butter or spices +meat or fish any style cooked any way +coffee or tea (1 cup).
  • Bedtime snack: 8 ounces of tomato juice or skim milk.

Foods the dieter may not eat: white onions, potatoes, celery, peas, cereal, corn, starchy vegetables, potato chips, peanut butter, pasta, corn chips, jelly or jam, sweet pickles, pretzels, fruit, low-fat or diet salad dressings

2004 grapefruit research diet

The 91 subjects in this 12-week study were randomly assigned to four groups: one group received a placebo capsule plus 7 ounces of apple juice before each meal, the second group received grapefruit capsules plus 7 ounces of apple juice, the third group received 8 ounces of grapefruit juice plus a placebo capsule, and the fourth group received 1/2 of a fresh grapefruit plus a placebo capsule. At the end of the 12 weeks, the subjects in the three groups that had received some form of grapefruit had lost significantly greater amounts of weight than those in the group that had received only the placebo, with those who received the fresh grapefruit losing the most weight. The patients were not asked to make any other changes in their food intake, but they were required to take 30-minute walks three times a week.

Grapefruit diet capsules

As of 2007 there are two types of grapefruit pills or capsules sold over the Internet, both claiming to help people lose weight. The “grapefruit pectin diet tablets” are said to “help release fat deposits“that the dieter already carries on the stomach and hips. “They can also prevent new fat from penetrating the cells by redirecting it to the muscles where it is burned off, thereby eliminating fat deposits.” The pills contain 200 mg of grapefruit pectin, plus cellulose and fiber. Given the high fiber content of these pills, it is most likely that they simply speed up the dieter’s digestion and elimination.

The Grapefruit Solution Natural Diet, based on a book published in 2004, makes use of capsules that contain “pure, organic whole grapefruit. .. . Five years of study and research has gone into developing and perfecting the technique of taking whole grapefruit and converting it into concentrated power while retaining all the benefits of the entire grapefruit.” In addition to the capsules, however, this diet does emphasize the importance of exercise as well as a balanced diet of complex carbohydrates and protein foods.

Function

The fad versions of the grapefruit diet are intended for rapid weight loss. They are usually recommended as a good way to lose weight after holiday-related overeating or to fit into a special outfit for an important occasion. Several of the versions available on the Internet, however, claim that the grapefruit diet can be used for weight maintenance or for long-term nutrition on a twelve-days-on, two-days-off schedule.

The 2004 research version of the diet is intended to assess the effectiveness of grapefruit in counteracting metabolic syndrome (a group of risk factors for heart disease related to insulin resistance) as well as its usefulness in weight reduction diets. Preliminary results indicate that regular inclusion of grapefruit in the diet is effective in helping patients lose weight at a moderate rate and in improving their response to insulin.

Benefits

The fad versions of the grapefruit diet should be avoided in spite of their promises of rapid weight loss. The VLCD version does not allow enough calories to supply the daily energy needs of even a moderately active adult and is nutritionally unbalanced. The high-protein version is highly unlikely to help anyone lose weight, since its allowance of “meat any style and any amount” and “double or triple helpings” of meat and vegetables could easily encourage overeating.

Using grapefruit as an adjunct to a balanced weight-reduction diet by eating half a grapefruit before meals, however, appears to be helpful in reducing hunger cravings. It also contributes fiber and vitamins to the dieter’s daily intake.

Precautions

General precautions

A general precaution for anyone seeking to lose weight is to consult a physician before trying any specific diet. This precaution is particularly important for adolescents, women who are pregnant or nursing, people with kidney or liver disorders, people with eating disorders, anyone who has had recent surgery, and anyone who needs to lose more than 30 pounds.

Drug interactions

Here is a list of families of medications known to interact with grapefruit juice. Readers should consult their doctor or a pharmacist if they are taking a specific medication that belongs to any of these groups:

  • Calcium channel antagonists (given to treat high blood pressure).
  • Immunosuppressants (given to control autoimmune diseases).
  • Statins (given to reduce blood cholesterol levels)
  • HIV protease inhibitors (given to treat HIV infection).
  • Antihistamines (given to treat seasonal allergies)
  • Antiarrhythmics (given to control irregular heartbeat).
  • Sedatives, sleep medications, and benzodiazepine tranquilizers
  • Birth control pills
  • Selective serotonin reuptake inhibitors (given to treat depression)
  • Drugs given for male impotence
  • Some anti-migraine drugs

In addition, people who are using herbal teas, other Western herbal preparations, or herbal compounds associated with Ayurveda or traditional Chinese medicine should consult their doctor or a pharmacist before beginning a grapefruit diet, as the chemicals in herbs can interact with grapefruit as well as with prescription medications.

Risks

The risks of using the fad versions of the grapefruit diet include nutritional imbalance (for both versions) and weight gain (for the high-protein version). The researcher who designed and conducted the Scripps.

Clinic trial has specifically warned people against the fad grapefruit diets, saying that both are unhealthy.

The risk of a severe interaction between grapefruit and prescription drugs can be minimized by checking with a physician or pharmacist before adding large amounts of grapefruit or grapefruit juice to the diet.

Research and general acceptance

Basic nutritional information about grapefruit

Unlike some other fruits, such as apples, grapes, and lemons, that have figured in mono diets, grapefruit is a relatively new addition to the human table. It was not known to the ancient world and was first encountered by Europeans in the 1750s on the island of Barbados in the West Indies. Grapefruit (Citrus paradisi) developed as a hybrid of the pomelo (Citrus maxima), a large citrus fruit with a sour taste, and the sweet orange (Citrus sinensis). It is not known whether the hybridization occurred spontaneously in the citrus groves on the island or was carried out by native fruit growers.

The grapefruit was originally called the shattuck or shaddock until the 1820s. The name came from a Captain Shaddock, a 17th-century Englishman who had brought the first pomelo seeds to Barbados in 1693. In 1823 the new hybrid was brought to Florida by a Frenchman named Odette Philippe; it was first cultivated only as an ornamental plant. By the 1880s, however, grapefruit were being shipped from Florida to New York and Philadelphia. It was not until the 1940s that improved methods of packaging and faster transportation made grapefruit a household favorite in the Northeast as well as in Florida and the Southwest. As of 2007, the United States produces 41% of the world’s grapefruit.

Evaluations of grapefruit in weight reduction diets

Grapefruit is considered a good food choice for people watching their weight because it is relatively filling thanks to its fiber content. It also has a low glycemic index (GI), which is a measurement of the rate at which carbohydrates in the food affect a person’s blood glucose level within two hours after eating the food. Foods with low GI scores break down slowly in the digestive tract and thus prevent sudden changes in the blood sugar level—an important consideration for persons with metabolic syndrome or type 2 diabetes and possibly for those watching their weight for other reasons. Grapefruit has a GI of 25 (pure sugar is 100), which is lower than the GI scores of apples (40), oranges (51), and bananas(51).

According to the research team at Scripps Clinic, it is not yet known as of 2007 why grapefruit appears to improve insulin response in overweight people or why it assists weight loss. Ongoing research may help to answer this question, but one finding at least is clear: grapefruit does not contain any miracle fat-burning enzymes.

 

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