Found this recommended check list for assessing whether a diet was a fad and considered it could equally apply to diets promoted to help fight or cure cancer:
"Each year, new weight loss diets appear that promise to reveal the ultimate secret of success – if only you buy the book, pills or potions.
When assessing whether a diet is a fad, ask yourself, does the diet:
- contradict advice from qualified health professionals?
- promote or ban specific foods or whole food groups?
- promote a one-size-fits-all strategy?
- promise quick, dramatic or miraculous results with minimal effort?
- focus only on short-term results?
- promote “miracle” pills, supplements or products touted to “burn fat”?
- make claims based on personal testimonials or one random study?
If the answer to two or more of these questions is “yes”, it’s probably a fad. "
Full article is from the University of Newcastle, Australia academics Clare Collins, Professor in Nutrition and Dietetics, Postdoctoral research fellow Lee Ashton plus Postdoctoral Researcher Rebecca Williams: theconversation.com/blood-t...
The article looks specifically at the Blood type, Pioppi, Gluten-free and Mediterranean diets and concludes with the advice "If you need help or to check whether you are meeting your nutrient needs, consult your GP or a dietitian." Conveniently, there's a link to finding an Accredited Practising Dietitian in Australia and I'd hope that other countries have similar lists to accredited diet specialists.
Likewise "The U.S. News and World Report has however confirmed that the healthiest diet at present is the Mediterranean diet. For this report the team of experts ranked 41 different popular diets. They came to the unanimous conclusion that the Mediterranean diet can provide long term benefit to health. They named the DASH diet (Dietary Approaches to Stop Hypertension) as the second healthiest diet. The DASH diet is recommended for keeping hypertension or high blood pressure under control. Third on the list was a flexitarian diet that is mainly vegetarian diet which allows an occasional serving of meat. Fourth in the list was shared by brain-focused MIND diet and Weight Watcher’s diet and 11th on the list is the Vegetarian diet. Vegan diet ranks 20th on the list, Paleo diet ranks 33rd and Whole30 and Keto diets rank 38 together. Keto diet has been most in news over the last year, gaining popularity."[/I]