Impact of nutrition counseling on nutrition status in patients with head and neck cancer undergoing radio- or radiochemotherapy: a systematic review.

PURPOSE: In this systematic review, we included randomized controlled trials from 2004 to 2021 to determine the effect of individual dietary counseling for patients with head and neck cancer, specifically, nutritional outcome, morbidity, and quality of life (QOL), during and after chemo- and chemoradiotherapy. METHODS: In October 2023, a systematic search was conducted searching five electronic databases (Embase, Cochrane, PsychInfo, CINAHL, and Medline) to find studies concerning the use and effectiveness of intensive nutritional care on head and neck cancer patients. RESULTS: From all 2565 search results, 6 studies with 685 head and neck cancer patients were included in this systematic review. The patients were treated with radiotherapy or radiochemotherapy. The therapy concepts include intensive nutritional support from a dietician. Outcomes were nutritional status, body composition, quality of life, and adverse effect. All studies had low quality, high risk of bias, and reported heterogeneous results: some studies reported significant improved nutrition status, body composition and quality of life, while other studies did not find any changes concerning these endpoints. CONCLUSION: Due to the very heterogeneous results and methodical limitations of the included studies, a clear statement regarding the effectiveness of intensive nutritional therapy of head and neck cancer patients is not possible. Further well-planned studies are needed.

Development and analysis of quality assessment tools for different types of patient information - websites, decision aids, question prompt lists, and videos.

OBJECTIVE: Our working group has developed a set of quality assessment tools for different types of patient information material. In this paper we review and evaluate these tools and their development process over the past eight years. METHODS: We compared the content and structure of quality assessment tools for websites, patient decision aids (PDAs), question prompt lists (QPLs), and videos. Using data from their various applications, we calculated inter-rater concordance using Kendall's W. RESULTS: The assessment tools differ in content, structure and length, but many core aspects remained throughout the development over time. We found a relatively large variance regarding the amount of quality aspects combined into one item, which may influence the weighting of those aspects in the final scores of evaluated material. Inter-rater concordance was good in almost all applications of the tool. Subgroups of similar expertise showed higher concordance rates than the overall agreement. CONCLUSION: All four assessment tools are ready to be used by people of different expertise. However, varying expertise may lead to some differences in the resulting assessments when using the tools. The lay and patient perspective needs to be further explored and taken into close consideration when refining the instruments.

Green tea and green tea extract in oncological treatment: A systematic review.

Purpose: Teas are an essential part of traditional phytotherapy. The aim of this systematic review is to assess the clinical evidence using green tea catechins in cancer care. Methods: A systematic search was conducted searching five electronic databases concerning the effectiveness and risks of epigallocatechin gallate (EGCG) on cancer patients. Results: Seven studies with 371 patients were included. Patients were mainly suffering from breast and prostate cancer. Dosing ranged from 28 mg to 1600 mg EGCG, intervention time from 7 days to 6 months with different applications (topical 2 studies; oral 5 studies). The studies showed heterogeneous methodological quality and results leading not to conduct a meta-analysis. There was a small decrease in prostate-specific-antigen levels in one study (N=60; T0:(mean±SD) 9.6±5.2 ng/ml, T1: 8.4±4.3 ng/ml vs. T0: 9.9±8.5 ng/ml, T1: 10.0±9.0 ng/ml; p=0.04), whereas in a second study only a trend was seen. Topical green tea was as effective as metronidazole powder in reducing the odor of fungating malignant wounds (1 study; N=30) with a consequent increase in quality of life (QoL) (p<0.001), improvement of appetite (p<0.001), malodorous control (p<0.001), social activities (p<0.001). Radiotherapy-induced diarrhea was lower in the green tea intervention group compared to placebo (1 study; N=42; week 4+5: without diarrhea p=0.002). Conclusions: The studies suggest that EGCG is as effective as a local antibiotic in malodorous control and improvement of QoL of fungating malignant wounds. Green tea could be a possible complementary method for treating acute radiation-induced diarrhea. Due to limitations, further studies with higher methodological quality and larger sample sizes are needed.

Diet Changes and Underlying Motives in Cancer Patients.

With rising cancer incidence rates and numbers of long-term cancer survivors, diet increasingly comes into view of patients as well as healthcare providers. The aim was to analyze cancer patients' concepts of nutrition, changes in diet and reasons for these changes. This study is a cross-sectional single-center study. Data was collected 12/2017 - 01/2019 using a questionnaire. The study was set at an outpatient department at a German university hospital. 102 patients (male n = 47, female n = 54; age 34 to 86 years [mean = 62.3]) with cancer were included in the study. Statistical calculation was performed with Mann-Whitney-U-Test and Wilcoxon-signed-rank. p < 0.05 was considered significant. Patients were more concerned with diet after their diagnosis than before (p < 0.01). Seventy-one (70%) patients reported that they changed their diet or planned to do so. Some changes included an increased intake of vegetables or fruits. Patients who changed their diet more often were convinced that there was a positive influence of diet on the course of cancer (p < 0.05). Diet is an important topic for many cancer patients. Some patients seem to have a lack of information regarding the effect of diet on health. Physicians and dietitians should provide more education on healthy and safe diets for cancer patients.

Education of complementary and alternative medicine in adult education centers in Germany: a web-based survey.

BACKGROUND: Adult education centers are an important part of health education worldwide. Our aim was to evaluate the courses offered by German adult education centers with regard to complementary medicine and nutrition. METHODS: A systematic web-based search was done for the websites of German adult education centers and courses were analyzed considering topics, scientific soundness, and qualification of instructors. RESULTS: Our search revealed 502 courses, 360 (71.7%) related to complementary and alternative medicine (CAM) and 176 courses on nutrition (35.1%). CAM courses most often presented methods with a focus on traditional Eastern medicine with yoga and similar mind-body practices (41.9%), traditional Chinese medicine (TCM; 13.3%), and ayurvedic medicine (11.4%). Content concerning nutrition mainly included controversial fasting methods like alkaline fasting, detox diets, and therapeutic fasting (43.8%), as well as Eastern traditional diets from TCM and ayurveda (21.7%). Most of the courses were given by non-medical practitioners (NMPs; 36.4%), while only very few physicians were engaged. CONCLUSION: There are substantial doubts on the scientific background of many courses offered for lay adult health education. Besides direct misinformation, many courses reinforce alternative and non-evidence-based notions in society. Adult education centers should reconsider the topics of their courses as well as the professional qualifications of the instructors.

Lay Etiology, Self-Efficacy and Patient Activation Among Cancer Patients.

BACKGROUND: We aimed at clarifying correlations between lay etiologies, self-efficacy, and patient activation among cancer patients. METHODS: Patients with different kinds of cancer answered a questionnaire on self-efficacy, lay etiology, and patient activation. RESULTS: 639 patients participated. Psychological reasons/stress (43.3%) and destiny (41.6%) were the most cited causes. Lay etiology was influenced by demographics, self-efficacy, and patient activation. Men, younger people, and active patients more often described internal causes of cancer, women and religious patients more often external causes. Patients with higher scores of self-efficacy were more often convinced of external cancer causes. CONCLUSION: By identifying individual disease theories, physicians may improve patient-physician communication.

Education of non-medical practitioners in Germany-an analysis of course subjects of specialized schools.

In Germany, non-medical practitioners (NMPs; in German: Heilpraktiker) offer a broad range of complementary and alternative (CAM) methods. Our aim was to characterize schools for NMPs in Germany in terms of basic (medical) training and advanced education. We found 165 schools for NMPs in a systematic web-based search. As the medical board examination NMPs must take before building a practice exclusively tests their knowledge in conventional medicine, schools hardly include training in CAM methods. Only few schools offered education on CAM methods in their NMP training. Although NMP associations framed requirements for NMP education, 83.0% (137/165) of schools did not meet these requirements. Patients and physicians should be aware of the lack of training and consequent risks, such as harm to the body, delay of necessary treatment, and interaction with conventional drugs. Disestablishing the profession of NMPs might be a reasonable step.

Cancer Patients Numeracy and Preferences for Information Presentation-a Survey Among German Cancer Patients.

Numeracy is highly relevant for therapy safety and effective self-management. Worse numeracy leads to poor health outcome. Most medical information is expressed in numbers. Considering the complexity of decisions, more information on the patient's ability to understand information is needed. We used a standardized questionnaire. Content was self-perception of numeracy, preferences regarding decision-making with respect to medical issues, and preferred content of information from four possible answers on side effect of cancer therapies (insomnia) within two scenarios. Overall, 301 participants answered the questionnaire. Presentation of facts in numbers was rated as helpful or very helpful (59.4%). Higher numeracy was associated with higher appreciation for presentation in numbers (p = 0.002). Although participants indicated presentation of facts in numbers as helpful in general, the favored answer in two concrete scenarios was verbal and descriptive instead of numerical. Numeracy is highly relevant for therapy safety and effective self-management. Health professionals need more knowledge about patient's ability and preferences with respect to presentation of health information. An individualized patient communication might be the best strategy to discuss treatment plans. We need to understand in which situations patients benefit from numerical presentation and how managing numerical data might influence decision processes.

Cancer patients' needs for virtues and physicians' characteristics in physician-patient communication: a survey among patient representatives.

BACKGROUND: Data on patients' needs with respect to physicians' ethical behavior and virtues are important but not available in most cases. PATIENTS AND METHODS: In an iterative process together with patients' representatives, we developed a standardized questionnaire which was distributed to the representatives of the Women's Self-Help after Cancer in Germany. We started with the classical ethical virtues and clustered them to characteristics. The patients' representatives were asked to rate in different communications settings. RESULTS: One hundred eighty-six patients' representatives took part in the survey. For four communication situations (first communication on symptoms, diagnosis of cancer, choice of therapy, doubts on therapy), competence was rated as very important by 80-89% and as important by 6-7%; honesty as very important by 78-89% and as important by 5-12%; respect as very important by 66-71% and as important by 19-21%; and patience as very important by 55-68% and as important by 6-24%. Compassion was rated as less important, with only 24-31% rating it as very important and another 26-32% as important. Additional desires expressed by the participants were physicians having more time (9.1%) and a better relationship between physician and patient (7.0%). CONCLUSION: Competence, honesty, respect, and patience are important characteristics which should be focused on in communication training of medical students and physicians. In spite of compassion being rated as less important, training on compassion/empathy might help doctors to improve coping with the continuous confrontation with complications, progress, suffering, and death of their patients.

Computer-Based Readability Testing of Information Booklets for German Cancer Patients.

Understandable health information is essential for treatment adherence and improved health outcomes. For readability testing, several instruments analyze the complexity of sentence structures, e.g., Flesch-Reading Ease (FRE) or Vienna-Formula (WSTF). Moreover, the vocabulary is of high relevance for readers. The aim of this study is to investigate the agreement of sentence structure and vocabulary-based (SVM) instruments. A total of 52 freely available German patient information booklets on cancer were collected from the Internet. The mean understandability level L was computed for 51 booklets. The resulting values of FRE, WSTF, and SVM were assessed pairwise for agreement with Bland-Altman plots and two-sided, paired t tests. For the pairwise comparison, the mean L values are LFRE = 6.81, LWSTF = 7.39, LSVM = 5.09. The sentence structure-based metrics gave significantly different scores (P < 0.001) for all assessed booklets, confirmed by the Bland-Altman analysis. The study findings suggest that vocabulary-based instruments cannot be interchanged with FRE/WSTF. However, both analytical aspects should be considered and checked by authors to linguistically refine texts with respect to the individual target group. Authors of health information can be supported by automated readability analysis. Health professionals can benefit by direct booklet comparisons allowing for time-effective selection of suitable booklets for patients.

Plants and Surgery: The Protective Effects of Thymoquinone on Hepatic Injury-A Systematic Review of In Vivo Studies.

Multimodal treatment concepts including liver transplantation for hepatocellular carcinoma (HCC), extended resection methods and neoadjuvant chemotherapy for colorectal liver metastasis significantly improve patients’ outcome. However, surgery-induced hepatic ischemia-reperfusion injury (IRI) and chemotherapy-associated hepatotoxicity result in hepatocellular damage and compromised liver function. Activation of common key pathways in ischemic liver and hepatotoxic injury results in oxidative stress, inflammatory responses and apoptosis causing organ damage. Controlling liver damage before and during surgery is essential for the postoperative outcome. Nigella sativa has a long tradition as a natural remedy. In the essential oil, Thymoquinone (TQ) was identified as the main component and responsible for most of the therapeutic effects. Therefore, this systematic review aimed to summarize the hepatoprotective effects of TQ and its potential suitability to improve surgical outcome by reducing surgical ischemic injury and hepatotoxicity of neoadjuvant chemotherapy. The key findings can be summarized as TQ having strong antioxidant, anti-inflammatory, antifibrotic, anti-/proapoptotic and anticarcinogenic effects. Almost no side effects were reported irrespective of a large dose range, suggesting a wide therapeutic window. These results give rise to the expectation that TQ could evolve to a novel powerful drug to reduce hepatic injury.

Evaluation of the Quality of Online Information for Patients with Rare Cancers: Thyroid Cancer.

The Internet offers an easy and quick access to a vast amount of patient information. However, several studies point to the poor quality of many websites and the resulting hazards of false information. The aim of this study was to assess quality of information on thyroid cancer. A patients' search for information about thyroid cancer on German websites was simulated using the search engine Google and the patient portal "Patienten-Information.de". The websites were assessed using a standardized instrument with formal and content aspects from the German Cancer Society. Supporting the results of prior studies that analysed patient information on the Internet, the data showed that the quality of patient information on thyroid cancer is highly heterogeneous depending on the website providers. The majority of website providers are represented by media and health providers other than health insurances, practices and professionals offering patient information of relatively poor quality. Moreover, most websites offer patient information of low-quality content. Only a few trustworthy, high-quality websites exist. Especially Google, a common search engine, focuses more on the dissemination of information than on quality aspects. In order to improve the patient information from the Internet, the visibility of high-quality websites must be improved. For that, education programs to improve patients' eHealth literacy are needed. A quick and easy evaluation tool for online information suited for patients should be implemented, and patients should be taught to integrate such a tool into their research process.

Understandability of Patient Information Booklets for Patients with Cancer.

The improvement of health literacy in general and the information of individual patient is a major concern of the German national cancer plan and similar initiatives in other western countries. The aim of our study was to assess the readability and understandability of information booklets for cancer patients available at German Web sites. A support vector machine (SVM) was used to discriminate between laymen- and expert-centric patient information booklets about nine most common tumor types. All booklets had to be available for free at the Internet. A total of 52 different patient booklets were downloaded and assessed. Overall, the assessment of all booklets showed that an understandability level L of 4.6 and therefore increased medical background knowledge is required to understand a random text selected from the sample. The assessed information booklets on cancer show very limited suitability for laymen. We were able to demonstrate that a medical background is necessary to understand the examined booklets. The current study highlights the need to create information material adjusted to the needs of laymen. Assessing understandability before publication, especially for laymen with low health literacy, could ensure the suitability and thus quality of the information material.

Utility of a Referral Letter to Improve Comprehensibility of Cancer Patients in Palliative Care: a Single-Center Study.

In spite of a referral letter as an important document for communicating between physicians, whether it could also be useful as a source of information for patients has not yet established. We included cancer patients in palliative care setting, all of whom completed a standardized questionnaire regarding their opinion concerning the utility of a referral letter as a source of information and its requirements to achieve a better understanding. Completed questionnaires were received from 50 cancer patients. Ninety-four percent of participants agreed that a referral letter could be of great importance for procuring medical information to them. There was only minor divergence among the participants respecting age, gender, or education. Particular requirements were diagnosis, treatment plan, prognosis, list of drugs, and contact data of involved physicians. Additional important topics were laboratory values, alternatives to current therapy, side effects and supportive therapy, and advices regarding lifestyle and naturopathy. The majority of patients also concluded to accept technical terms in doctor's letters if a glossary supported their comprehension. The majority of patients prefer a concise description of medical information in a referral letter. This form of a letter would boost patients' involvement and help them transfer medical information to other therapists or relatives.

The Quality of Patient Information Booklets for Cancer Patients-an Evaluation of Free Accessible Material in German Language.

According to the information-seeking behaviors of patients, booklets which can be downloaded from the Internet for free are an important source of information notably for patients with cancer. This study investigated whether information booklets for patients with cancer available at German websites are in accordance with the formal and content criteria of evidence-based information. We compared and compiled both content and formal criteria by matching different national and international standards for written patient information using a merged instrument. A catalog with a total of 16 items within 4 categories (quality of the publication, quality of information, quality of information representation, and transparency) was created. Patient information booklets for the most frequent tumor types were collected from the Internet. A total of 52 different patient booklets were downloaded and assessed. Overall, no booklet fulfilled all criteria. The quality of the publications was evaluated with an average value of 1.67 while the quality of the information had a mean value of 1.45, and the quality of information presentation had a similar rating (1.39). The transparency criteria were evaluated as lowest with an average of 1.07. In summary, German booklets for cancer patients have some shortcomings concerning formal and content criteria for evidence-based patient information. The applied requirement catalog is suitable for wide use and may help in quality assurance of health information. It may be used as part of an obligatory external evaluation, which could help improving the quality of health information.

Physiologic effects of voice stimuli in conscious and unconscious palliative patients-a pilot study.

BACKGROUND: Sounds and acoustic stimuli can have an effect on human beings. In medical care, sounds are often used as parts of therapies, e. g., in different types of music therapies. Also, human speech greatly affects the mental status. Although calming sounds and music are widely established in the medical field, clear evidence for the effect of sounds in palliative care is scare, and data about effects of the human voice in general are still missing. Thus, the aim of this study was to evaluate the effects of different voice stimuli on palliative patients. METHODS: Two different voice stimuli (one calm, the other turbulent) were presented in a randomized sequence, and physiological parameters (blood pressure, heart frequency, oxygen saturation, respiratory rate) were recorded. RESULTS: Twenty patients (14 conscious and 6 unconscious) participated in this study. There was a decrease of heart frequency as well as an increase of oxygen saturation in the group of conscious patients, whereas no significant change of blood pressure or respiratory rate were detected in either group, conscious and unconscious patients. CONCLUSIONS: Although our dataset is heterogeneous, it can be concluded that voice stimuli can influence conscious patients. However, in this setting, no effect on unconscious patients was demonstrated. More clinical research on this topic with larger groups and a broader spectrum of parameters is needed.

Information Deficits and Second Opinion Seeking - A Survey on Cancer Patients.

OBJECTIVE: To learn more about cancer patients' motivation for seeking a second opinion. METHODS: Participants filled in a standardized questionnaire. RESULTS: Among 106 patients, 34% had looked for a second opinion, 81% wanted to check the accuracy of their treatment, and 49% needed to better understand the diagnosis. Low understanding of information was associated with looking for a second opinion, and 79% felt assured after a second opinion. CONCLUSIONS: Seeking a second opinion may help cancer patients in coping with the disease. As data on benefits are missing, other strategies, such as qualified first opinion and a sound physician-patient communication, may be advisable.

Cancer Patients and the Internet: a Survey Among German Cancer Patients.

An increasing number of patients and relatives use the Internet to get additional or initial information about their disease. The aim of the study was to reevaluate the Internet usage among German cancer patients. Using a standardized questionnaire, we did an anonymous survey on patients attending a series of lectures on complementary medicine in 2014. We received 255 questionnaires. Nearly 80 % of the participants stated that they used the Internet to read up information about health or medicine issues. There was no significant difference regarding gender, age, or status (patient, current treatment/former treatment; relatives). Most users use the Internet in order to get additional information after a consultation with a physician (82.2 %). Important qualities from the view of the patient are a trustable source (65.3 %), information from experts (59.6 %), and actual information (52.8 %). There is an increasing number of patients in Germany looking for information in the Internet mostly in the intention of getting additional information. Yet, as the quality of information is heterogeneous, false information may lead to distrust in the doctor or wrong decision-making. Accordingly, organizations working on improving quality of cancer care should engage in conveying comprehensive and actual information adapted to the needs of patients. Physicians should know trustful websites for referral of patients.

Economic Evaluation of Complementary and Alternative Medicine in Oncology: Is There a Difference Compared to Conventional Medicine?

OBJECTIVE: To analyze the financial burden of complementary and alternative medicine (CAM) in cancer treatment. MATERIALS AND METHODS: Based on a systematic search of the literature (Medline and the Cochrane Library, combining the MeSH terms 'complementary therapies', 'neoplasms', 'costs', 'cost analysis', and 'cost-benefit analysis'), an expert panel discussed different types of analyses and their significance for CAM in oncology. RESULTS: Of 755 publications, 43 met our criteria. The types of economic analyses and their parameters discussed for CAM in oncology were cost, cost-benefit, cost-effectiveness, and cost-utility analyses. Only a few articles included arguments in favor of or against these different methods, and only a few arguments were specific for CAM because most CAM methods address a broad range of treatment aim parameters to assess effectiveness and are hard to define. Additionally, the choice of comparative treatments is difficult. To evaluate utility, healthy subjects may not be adequate as patients with a life-threatening disease and may be judged differently, especially with respect to a holistic treatment approach. We did not find any arguments in the literature that were directed at the economic analysis of CAM in oncology. Therefore, a comprehensive approach assessment based on criteria from evidence-based medicine evaluating direct and indirect costs is recommended. CONCLUSION: The usual approaches to conventional medicine to assess costs, benefits, and effectiveness seem adequate in the field of CAM in oncology. Additionally, a thorough deliberation on the comparator, endpoints, and instruments is mandatory for designing studies.