Long-term weight loss can only be achieved and sustained through meaningful lifestyle changes, they said.
“People should always be cautious of any diet or meal plan that restricts certain foods, suggests calorie levels below recommended intakes and claims fast results,” Gonzalez said. “I challenge my patients to ask themselves not what they are eating but why.”
Whether or not fasting is healthy, Gonzalez said, is a hotly debated topic among medical professionals.
Most experts say fasting for weight loss is not healthy, Gonzalez said, and is not a good answer for an overall healthful lifestyle. It can also be dangerous if taken to an extreme. It can lead to nutrient deficiencies and be problematic for patients with liver or kidney problems, compromised immune systems, or for people taking certain medications.
Added Pratt, “This appears to be the next fad diet. These diets become very popular quickly and may fall out of favor just as quickly. Some susceptible people might develop poor eating habits while on the diet, and engage in starvation, binging or both. This diet doesn’t teach people how to make healthy lifestyle choices that can be sustainable. Keep in mind that you can out eat any diet plan if you were to splurge on the five non-fasting days.”