Intermittent Fasting: 5:2 Or Longo Diet?

which is better 5 2 diet or longo diet

The 5:2 diet and the Longo diet are both popular approaches to intermittent fasting. The 5:2 diet involves eating normally for five days and then fasting or restricting calories for the remaining two days of the week. On the other hand, the Longo diet, also known as the Fasting-Mimicking Diet (FMD), was designed by longevity researcher Valter Longo and consists of five consecutive days of restricted eating, followed by a period of regular eating for the rest of the month. Both diets have been shown to be effective for weight loss and improving various health markers, but they differ in terms of the frequency and duration of fasting periods.

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Weight loss results

Valter Longo, PhD, has designed a diet that can help with weight loss and boost overall health. The Longevity Diet is a low-protein, low-sugar, low-calorie diet with no animal protein or animal fat. The diet is plant-based and includes dehydrated soup mixes, herbal teas, kale chips, nut-based energy bars, an algae-based DHA supplement, and a multivitamin. The diet lasts for five days, and calorie consumption is kept at around 700 calories per day.

Longo's diet has been shown to decrease liver and abdominal fat without reducing muscle mass. It also reduces A1C, a measure of average blood sugar levels, and lowers blood pressure. One of the studies on the Longevity Diet showed a weight loss of about six pounds in three months, with significant drops in body fat and waist circumference.

The 5:2 diet, on the other hand, involves eating five days a week and fasting for the remaining two days. This diet has also been shown to be effective for weight loss. The largest trial on the 5:2 diet showed an 18-pound weight loss within six months, comparable to continuous calorie restriction. There was no significant difference in weight maintenance over the following six months between the two methods. The 5:2 diet has also been shown to lower blood pressure and cholesterol.

Both diets have been shown to be effective for weight loss, with the 5:2 diet resulting in slightly higher weight loss over six months. However, the Longevity Diet may be more sustainable for some people as it does not involve complete fasting days. Additionally, the 5:2 diet may cause 'jet-lag' symptoms in some people, such as early waking.

Overall, both the 5:2 diet and the Longevity Diet can help with weight loss and offer additional health benefits. The choice between the two diets may depend on individual preferences and lifestyle considerations.

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Hunger and mood

Hunger is a natural part of any diet, but it is important to distinguish between hunger and appetite. Hunger is a physical need to eat, while appetite is more of a psychological desire. Intermittent fasting diets, such as the 5:2 diet and the Longo diet, can lead to increased feelings of hunger on fasting days, but this does not necessarily translate into overeating on non-fasting days. In fact, many people find that their hunger levels decrease over time as their bodies adjust to the new eating pattern.

On the 5:2 diet, people eat normally for five days and then restrict their calorie intake to 500-600 calories for the remaining two days. This can lead to hunger pangs, especially during the first few cycles. However, some people report that these hunger pangs become less intense as they get used to the diet. Water, plain coffee or tea, and herbal tea can help to reduce hunger and increase fluid intake during fast days.

The Longo diet, also known as the Fasting Mimicking Diet (FMD), involves spending five consecutive days per month consuming a low-calorie, low-protein, low-sugar, and plant-based diet with zero animal protein or fat. This diet is designed to simulate the metabolic effects of fasting while still allowing people to eat. While hunger may be expected on this diet, there is limited information on people's experiences of hunger specifically. However, given the low-calorie nature of the diet, it is likely that hunger could be more pronounced, similar to the 5:2 diet.

It is important to note that individual experiences of hunger may vary, and some people may find that they adjust to the diets more easily than others. Additionally, the frequency and intensity of hunger pangs may depend on various factors such as overall health, age, weight, and dietary composition.

In terms of mood, there is some evidence to suggest that neither the 5:2 diet nor the Longo diet have a significant adverse impact on mood. Participants in studies of both diets did not report negative mood changes, even when fully fasting or consuming a restricted number of calories. However, it is important to consider that these diets may not be suitable for everyone, and some people may experience mood changes or irritability due to hunger or changes in energy levels.

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Longevity diet foods

The 5:2 diet involves eating for five days and fasting for two. This pattern of intermittent fasting has been shown to be effective for weight loss, with comparable results to continuous calorie restriction. However, feelings of hunger may be more pronounced on the 5:2 diet, and it may not be as easy to adhere to as daily calorie restriction.

An alternative approach is the Longo diet, also known as the Fasting Mimicking Diet (FMD) or Prolon diet. This involves spending five consecutive days a month on a fasting-mimicking diet. The FMD was designed by longevity researcher Valter Longo to simulate the metabolic effects of fasting while still consuming food. The diet is low in protein, sugars, and calories, and contains zero animal protein and fat. It is plant-based and aims to lower the level of the cancer-promoting growth hormone IGF-1.

Longo himself eats a diet that is about 60% complex carbohydrates, 30% fats, and the rest protein. He typically eats within a 12-hour window and fasts for 12-13 hours a day. An example day of eating for him includes tea (often green tea mixed with black tea), an apple, a friselle (an Italian whole wheat bagel thin) with an almond cocoa spread, 70 grams of pasta, 350 grams of legumes, 300 grams of mixed vegetables, and liberal amounts of extra virgin olive oil. Twice a week, he has fish for dinner, often salmon, bronzino, or orata, and he enjoys wine but limits himself to under five glasses a week.

The Longo diet also includes recommendations for the frequency of meals and snacks. It suggests that individuals who are overweight or tend to gain weight easily should consume two meals a day (breakfast and either lunch or dinner) plus two low-sugar snacks with fewer than 100 calories each. Those who are at a normal weight or tend to lose weight easily should eat three meals a day and one low-sugar snack. All eating should be confined to a twelve-hour period.

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Daily routine

The 5:2 diet is an intermittent fasting regime in which calorie intake is limited to 500–600 calories per day for two days of the week. The other five days are routine eating days. Many people find this way of eating to be easier to stick to than a traditional calorie-restricted diet. However, some people have reported quality-of-life issues with the 5:2 diet, such as headaches, lack of energy, and difficulty fitting the fasting days into their weekly routine.

The Longo diet, on the other hand, is a fasting-mimicking diet (FMD) designed by Valter Longo, a longevity researcher and professor of gerontology and biological sciences. The FMD involves consuming foods high in unsaturated fats but low in calories, proteins, and carbs. It is meant to be followed for five consecutive days per month and is designed to mirror the effects of a water-only fast while providing enough calories to be considered safe.

Longo also recommends a daily routine that involves time-restricted eating within a 12-hour window. He suggests having breakfast and stopping eating three hours before bedtime, keeping this routine steady every day. On weekdays, Longo skips lunch and has a coffee instead, sometimes with a 100-calorie snack. On weekends, he has all three meals and an additional snack around 5 pm, followed by a big dinner that usually consists of pasta with legumes and vegetables.

In terms of daily routine, the 5:2 diet offers more flexibility as it only restricts calories for two days a week, while the Longo diet involves a more structured approach with specific guidelines for the FMD protocol and time-restricted eating within a 12-hour window.

Both diets have their own advantages and considerations. The 5:2 diet may be more suitable for those who want more flexibility in their daily routine, while the Longo diet provides a structured plan for specific periods with a focus on time-restricted eating.

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Pros and cons

5:2 Diet

The 5:2 diet involves eating normally for five days and fasting for the remaining two days of the week. On fasting days, some people choose to consume zero calories, while others stick to a 500-calorie limit. This diet has been found to be as effective as continuous calorie restriction, with similar weight loss results. Over six months, overweight men and women on the 5:2 diet lost about 12 pounds on average, with no significant difference from the 20 pounds lost in the continuous calorie restriction group.

Pros

  • The 5:2 diet is a good option for those who may not be able to handle a water-only fast.
  • It provides flexibility, as individuals can choose which two days of the week they would like to fast.
  • It does not seem to lead to overeating on non-fasting days.
  • It may be a good starting point for those who are obese, as it has shown greater weight loss results compared to the Longo diet in the short term.

Cons

  • Feelings of hunger may be more pronounced on this diet compared to an equivalent level of daily calorie cutting.
  • It may cause 'jet-lag' symptoms in some people, such as early waking.
  • It may not be as effective for long-term disease prevention as the Longo diet.
  • It has inconsistent effects on cognition and preserving lean mass.
  • Fewer subjects in the 5:2 diet group expressed interest in continuing the diet after the study was over.

Longo Diet

The Longo diet, also known as the Longevity Diet, was created by Valter Longo, a longevity researcher and professor of gerontology and biological sciences. This diet involves a few key components:

Fast-Mimicking Diet (FMD)

The FMD is a 4-5 day period of consuming foods high in unsaturated fats but low in calories, proteins, sugars, and carbs. It aims to replicate the metabolic effects of fasting while providing enough calories to be considered safe.

Eating within a 12-hour Window

Longo recommends getting all your meals in a 12-hour window, ideally having two meals per day plus one small snack.

Eating the Foods of Your Ancestors

Longo suggests focusing on foods that your ancestors ate, given they are compatible with the longevity diet. For example, if your ancestors are Italian, this would include a diet rich in tomatoes, green beans, garbanzo beans, and olive oil.

Sample Meals

Some sample meals from the Longo diet include:

  • Friselle (a type of whole grain bread) with an almond spread
  • Coffee for lunch, with an optional 100-calorie snack
  • Spaghetti with extra virgin olive oil and fresh clams, with a side of vegetables and fresh fruit for dessert
  • Farro/spelt with extra virgin olive oil, Grana Padano cheese, chicory, and carrots

Pros

  • The FMD component of the diet has been shown to improve muscle mass, cholesterol, blood pressure, and other areas.
  • It lowers the level of the cancer-promoting growth hormone IGF-1.
  • It reduces markers of inflammation.
  • It provides a structured meal plan and specific guidelines for food choices.
  • It includes a wider variety of food groups compared to the 5:2 diet, which may make it easier to adhere to.

Cons

  • The Longo diet may not result in as much weight loss as the 5:2 diet in the short term, especially for those who are obese.
  • It requires a significant time commitment, as it is recommended to be followed for at least three months to see results.
  • It may be challenging to follow due to the restriction of certain food groups, such as animal protein and animal fat.
  • It may not be suitable for everyone, as it is advised to consult a qualified nutritionist to determine your specific nutritional needs.
  • It may not be as effective for weight loss as pure fasting, according to some sources.
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Frequently asked questions

The 5:2 diet involves eating normally for five days and then restricting your calorie intake for the remaining two days.

The Longo diet, also known as the Longevity Diet, is a plant-based diet that includes fish and is based on the foods eaten by your ancestors. It consists of two meals per day and one small snack, all within a 12-hour window.

The 5:2 diet has been shown to aid weight loss, with an average of 12 lbs lost over six months. It may also be easier to manage than daily calorie restriction, as feelings of hunger are not more pronounced than with equivalent calorie-cutting methods.

The Longo diet has been shown to lead to weight loss, reduced body fat, decreased waist circumference, and lower blood pressure. It may also reduce inflammation, improve cognition, reduce the risk of cancer and heart disease, and protect against Alzheimer's.

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