Is Fasting Good for health? Types, Benefits, and Cautions

Is Fasting Good for health? Types, Benefits, and Cautions


Dr Vikram Chauhan


It’s been said that history repeats itself, and we’ve seen it happen on many occasions. The finest trends, whether in fashion, lifestyle, or music, always make a return. Fasting is one of these tendencies. People have begun to fast to better their lives outside of religious and political groups. Fasting on a regular basis has been linked to decreased incidence of heart failure and better metabolism. Fasting may therefore be the secret to living a long and healthy life. This page will go through the many kinds, advantages, and warnings.


Fasting is described as a time of complete or partial abstinence from all or some foods. Fasting may be used as part of a weight-loss regimen or for religious reasons. Fasting has been the focus of several kinds of research due to its potential as a longevity treatment. According to several studies, persons who fast on a regular basis have a nearly 45 percent reduced mortality risk than those who do not fast throughout the follow-up period.

Ayurveda claims that

Upavasa (fasting) is one of the ten Langhana (body-lightening) treatments in Ayurveda, and it is one of the Daivavyapashraya (spiritual) therapies. Fasting promotes digestive fire and induces Ama-dosha digestion, according to Ayurveda (metabolic toxins). Upavasa is a technique to draw closer to the almighty from a religious standpoint. Fasting stimulates autophagy, according to research. The vitiated dosha in the human body, particularly the digestive viscera, is referred to in Ayurveda as Aamashaya. This weakens and disables the digestive fire, resulting in stomach-related debilitation and the creation of ama (metabolic poisons or factors that originate as a result of the digestive fire’s defective functioning), which is said to be the underlying cause of all diseases. This causes blockages in the body’s pathways, resulting in a variety of illnesses.


Fasting may help you live longer and healthier by slowing down the aging process, preventing diabetes, thyroid problems, hypertension, and heart disease, and increasing your chances of living a long and healthy life. It also helps you lose weight. Healthy joints and a positive body image are inextricably linked to healthy body weight.

Fasting, if done correctly, has been claimed to provide the following health benefits:

  • Resting heart rate is lower.
  • Blood pressure is lower.
  • Insulin sensitivity is increased.
  • Improvements in the heart’s pumping action
  • LDL, or bad cholesterol, levels are lower.
  • Enhances Metabolism
  • Fasting insulin levels are lower.
  • Insulin sensitivity has improved.
  • Ketosis, which enhances weight loss, may be achieved by fasting for a brief period of time.
  • Defends Against Inflammation
  • Several reactions are triggered by ketosis during fasting, including reduced inflammation, improved blood sugar management, and a better response to physical stress.

The Different Types of Fasting

There are a lot of various methods to accomplish IF, which is fantastic. If this is something you’re interested in, you may choose the kind that best suits your needs, increasing your chances of success. Continue reading to learn about several types of intermittent fasting:

1. Fasting for two days a week

People who follow the 5:2 diet eat normally for five days and then cut down on calories for the remaining two days. Men typically ingest 600 calories and women 500 calories during the two fasting days.

2. Alternate-day fasting

The alternate-day fasting regimen entails fasting every other day and has numerous versions. Some individuals practice alternate-day fasting by avoiding solid meals entirely on fasting days, while others allow up to 500 calories. People often opt to eat as much as they want on feeding days.

3. Fast for 12 hours a day

This method is the most basic of the lot, and it entails fasting for 12 hours every day. You also don’t have to miss meals; all you’re doing is cutting out a night snack. However, this strategy does not fully exploit the benefits of fasting.

4. Time-Restricted Fasting

This style of fasting requires you to choose an eating window each day, which should ideally leave you with a 14 to 16-hour fast. This may assist in fat cell metabolism and insulin function optimization.

5. 24-Hour per Week

You only eat once a day during a weekly 24-hour fast. Some individuals opt to have supper and then not eat again until the following day’s dinner. That implies you’ll be fasting for 24 hours. Fasting times are almost always 24 hours long (dinner to dinner or lunch to lunch)

6. Meal Skipping

For beginners, this flexible approach to intermittent fasting may be beneficial. It entails missing meals on occasion. People may choose which meals to miss based on their hunger levels or time constraints. It is, nonetheless, important to consume nutritious meals at each meal.

What are the potential dangers of fasting?

Though research has shown the advantages of fasting in general, more evidence is needed to support fasting as a weight-loss approach. The first essential thing to remember is that fasting is not appropriate for everyone.

  • Fasting may not be a smart option for persons who have a history of eating issues.
  • Patients with diabetes who take medicines and insulin may have dangerously low blood sugar levels, which may be fatal.
  • Some people practice “dry fasting,” which means they don’t drink water or consume solid foods during their fasting times. This is a risky trend since it may lead to dehydration, tiredness, electrolyte imbalance, heatstroke, and headaches.
  • Fasting has been linked to migraines.
  • Severe calorie restriction may cause a person’s body weight to drop dangerously low.
  • Fasting-induced ketogenesis may have negative consequences since the body has become used to burning lipids rather than glucose. This is referred to as “keto flu.”
  • Fasting without supervision might lead to nutritional deficits. In the long term, this might have a negative influence on all physiological functioning.


Intermittent fasting may be done in a variety of ways, and no one method will work for everyone. Individuals will get the greatest results if they experiment with several styles to find which one best fits their lifestyle and tastes. Fasting for long periods when the body is unprepared, regardless of the form of intermittent fasting, might be harmful. These diets may not be appropriate for everyone. These tactics may increase a person’s negative connection with food if they are prone to disordered eating.

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