Can I make fruits out of my DNA
The important representatives of metabolic diets include:
Blood group diet
This diet is based on the ideas of the naturopath Peter d'Adamo. He assumes that a person's blood group determines which foods they can digest, which diseases they are susceptible to, which sport they are best at. According to d'Adamo's theory, certain proteins, the so-called lectins, get into the blood from all foods, where they clump together with the red blood cells and thereby damage the body. Depending on the blood group, the different foods would therefore lead to certain reactions in the body: some would make the body gain weight, others would make it slim. Unfavorable food would be poorly processed and deposited as depot fat.
This form of diet lacks any scientific basis and only leads to weight loss if the food intake is restricted so severely due to the prohibitions that it results in a negative energy balance.
According to the German Nutrition Society (DGE), there is no scientific evidence for the claimed health benefits of blood type diets. On the contrary, a recent study has now shown that all blood groups benefit equally from a diet based on the consumption of vegetables and fruits, legumes and whole grains, specifically with regard to weight loss and cardiometabolic health in obese adults. There was no evidence that a meat diet is good for anyone.
In no case has it been scientifically documented that lectins (hemagglutinins) from foods lead to clumping (agglutinations) in the blood. Only for a small part of the dietary lectins has it been proven that they pass from the intestine into the blood to a very small extent, but are immediately neutralized there. In addition, most lectins do not react specifically to blood groups, so they would affect everyone.
Lectins can be found in numerous plant-based foods, especially in potatoes and legumes such as beans or lentils, which should only be consumed cooked anyway. The lectins are destroyed by heating. Epidemiological studies have shown no connection between blood group and body weight.
This form of diet can also be found in the offerings of personal trainers as well as naturopathic and nutritional counseling practices. As a rule, the genes are examined by a specialized laboratory using a saliva sample; the advice is provided by the provider. The MetaCheck® examines seven genes. It is assumed that there are four different meta-types: Alpha (α), Beta (β), Gamma (γ) and Delta (δ). Each meta-type is supposed to process the main components of food (carbohydrates, proteins and fats) differently.
In addition, each of these meta-types should be available in two sport variants, namely endurance (E for "Endurance") and speed (S for "Speed"). The providers assume that the right type of sport causes particularly effective calorie consumption during training. For each meta-type there are special nutrition plans and recipes as well as recommendations according to the determined sport variant. Type Delta E, for example, gets along well with sugar, white flour, pasta and fats, but should be economical with fish, meat and dairy products. In terms of sport, endurance sports such as jogging, walking, swimming and rowing would be suitable.
According to the provider, the probability of successful weight reduction should increase by a factor of 2.5 if the meta-type recommendations are consistently adhered to.
The DNA examination is only necessary once. It costs - including personal advice - around 200-350 euros. The health insurance companies do not cover the costs.
There is no scientific proof that a diet that is adapted to the genetically predetermined metabolic profile is better than a completely normal diet - especially since the evaluation is limited to a few genes. Ultimately, the calorie deficit is critical to weight loss. In our opinion, genetic tests without personal, well-founded or medically supported advice are negligent. It is particularly critical when, in addition to the actual genetic analysis, supposedly individually necessary food supplements are sold.
The Society for Human Genetics (GfH) estimates the possible dangers of misinterpretation or overinterpretation of such genetic tests for consumers to be much higher than the advertised benefits.
If you want to try such a genetic test, you should make sure that you receive advice from qualified personnel (nutritionist, ecotrophologist, dietician) and that you can get further consultation appointments later if necessary. Consultations are also possible by phone or internet video phone. Anyone who is toying with a new sport based on the gene test should ideally also be introduced by a specialist. Genetic test providers who do not offer their customers personal, well-founded or medically supported advice act with gross negligence: because if the results are not classified, they can unsettle and overwhelm those affected.
Metabolic Balance is a nutritional concept that should be tailored to the individual metabolism. The program is offered in cosmetic studios and pharmacies, by alternative practitioners, doctors, personal trainers and "nutritionists according to metabolic balance®".
The care takes place either online (Metabolic Balance® Online) or in the practice (Metabolic Balance® Care). At Metabolic Balance fitness®, fitness studios are specifically integrated as license partners in order to develop new target groups. An individual nutrition plan is created for each participant based on anamnesis data (weight, height, previous illnesses), blood laboratory values (complete blood count) and personal preferences (special diets).
With this nutrition plan, which is adapted to the metabolism, both fat deposits should disappear and vitality and health should be preserved into old age. It is a reduced-calorie mixed diet with an increased protein content. According to the provider, the amount of protein is 0.8-1 grams per kilogram of body weight and day. Only small amounts of carbohydrates with a low glycemic index are offered. According to the nutrition plans of consumers that are available to us, around 950-1,050 kilocalories (kcal) per day are consumed in the first 14 days, but also more than 2,000 kcal for very obese participants.
A two-day preparation phase is followed by the strict phase with three meals a day, whereby the choice of food must be based exactly on the products and quantities specified on the individual plan. There must be a break of at least five hours between meals; Nothing can be eaten after 9 p.m. Each meal begins with the specified protein content; Fruit must always be consumed at the end of the meal. The personal daily amount of water (possibly up to four liters) must be drunk. All meals consist of a protein component (e.g. yogurt, meat, fish) and a vegetable or fruit component. In our plans with 950-1050 kcal, 2-3 slices of rye crispbread and fixed amounts of fruit provide the carbohydrates per day. Something from each of the eleven "protein groups" may only be consumed once a day.
In a third phase, the individual food selection is gradually expanded. In the long term, the program provides a solution to the strict nutrition plan, but the newly learned eating habits should be retained.
The costs are between 300 € and 840 € depending on the selected module, type of supervision (group / individual supervision) and period (3 -12 months). The statutory health insurances do not reimburse these expenses.
The menu appears to be very limited both in terms of food selection and in terms of calories (according to the provider, only the basal metabolic rate is covered). The dietary rules are very strict, the strict and quantitatively very detailed allocations to food (accurate to the gram in the strict phase) are incomprehensible to us.
Our main points of criticism:
- The "personal" recommendations, for one mozzarella and papaya, for the other ricotta and rhubarb, are scientifically incomprehensible.
- It has not been scientifically proven whether there is actually a connection between the blood values determined and weight loss.
- There is no seasonal food selection; exotic fruits are very often recommended.
- Lifelong perseverance seems difficult.
- Not really family-friendly, even if side dishes such as bread, rice, pasta or potatoes are served with all meals for the other family members.
- In our opinion, given nutrition plans promote the passivity of those willing to lose weight, instead of strengthening their ability to act and self-reliance.
This metabolic diet also follows the motto: Some get fat from milk and meat, others lose weight from it. In metabolic typing, three main metabolic characteristics are examined: the influence of the nervous system, the rate of combustion and the respective type of gland. A distinction is made between parasympathetic (calming) and sympathetic (stimulating) influence of the nervous system, "slow burners" (beta type) or "fast burners" (glycotype) and the gland types "thyroid type", "pituitary type", "adrenal type" and, in women, the "ovarian type" . This should explain certain preferences for food and the distribution of fat in the body. The blood group, the acid-base balance and some other parameters can also be included in the calculation of the individual metabolic diet.
Depending on the provider, these values are determined using different methods, but often using a special electromagnetic diagnostic device. A computer program then calculates a personal nutrition plan with precise food recommendations and recipes. It is advisable to repeat the examinations regularly.
In addition to the device variant, there are also special guides. Using an extensive self-assessment questionnaire, you should be able to easily find out your metabolic type (protein, carbohydrate and mixed type). The protein type should eat a lot of fat and protein (in the form of meat, liver) and few carbohydrates, the carbohydrate type little fat and little protein, the latter mainly in the form of low-fat milk and egg products. In the mixed type, the three main nutrients should be consumed in almost the same ratio to one another. The statutory health insurances do not cover the costs for the initial examination (from 250 €).
Weight loss appears to be less due to the adaptation of the metabolism than to the exclusion of high-calorie foods and better satiety as a result of a protein-rich diet.
The food recommendations often follow the generally applicable rules for a healthy diet, i.e. wheat flour, sugar, peeled rice and alcohol in moderation. Cons: This diet also prohibits certain metabolic types from consuming recommended foods. The thyroid type should forego fruit and fruit juices, but instead eat very protein-rich, i.e. meat-heavy. The impression arises that weight loss does not occur through the special adaptation of the metabolism, but through the exclusion of high-calorie foods and better satiety as a result of a protein-rich diet. No scientific evidence could be found for the functionality and accuracy of the diagnostic devices.
Immune / Allergy Diets
With this diet it is assumed that the cause of the obesity is an individual food intolerance.
You can find more information on the immune / allergy diet here.
Max Planck Diet
It is a strict, but not individual, diet plan for one week, which is repeated again afterwards. Allegedly, this special diet is supposed to permanently boost the metabolism and the body burns more calories than ever before. Within 14 days there should be an enormous weight reduction (up to 9 kilograms), and the change in metabolism should stop any further weight gain for three years.
All in all, it is a very protein-rich, extremely low-fat and extremely low-carbohydrate diet, consisting primarily of boiled eggs, steaks and boiled ham. Depending on the day, you can eat any amount of spinach, green lettuce and celery, lettuce and tomatoes, carrots and Swiss cheese, tomatoes or fruit. On four out of seven days, a dry bread roll (even whole grain) is allowed in the morning; the rest of the breakfasts consist of black coffee or tea with lemon. Any amount of natural yoghurt with fruit can be eaten in one evening - the only dairy product in the whole week. All alcohol is forbidden during this time.
Due to the extreme calorie restriction - only 400-800 kilocalories (kcal) per day - you lose a lot of weight in the short term. Eating this way for more than two weeks carries the risk of damage to health.
Allegedly, this diet was developed by scientists at the Max Planck Institute for Nutrition. The fact is that there is no such institute. Many years ago there was an institute for nutritional physiology; for almost ten years it has been called the "Max Planck Institute for Molecular Physiology" based in Dortmund. Scientists there have distanced themselves from this diet plan for almost 20 years, but it is still around. Physiologically, it cannot be explained how this diet is supposed to change the metabolism in the long term. Since this diet has been around for decades, it could be seen as the predecessor of the Glycemic Index diets.
Since this diet does not teach you to eat differently in the long run, the initial weight should be regained within a short time, if not even exceeded (yo-yo effect). Since the meager meals are only supposed to last two weeks, real nutritional deficiencies are unlikely. However, those who eat this way for longer run the risk of deficiency symptoms including damage to health.
The diet programs are often offered by physiotherapists and alternative practitioners without qualified nutritional training. Individual nutritional advice should always be provided by a certified nutritionist who is "approved" by health insurance companies. The costs for such a qualified consultation are covered by the statutory health insurances - with a medical certificate of the necessity.
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