A large study reported at an American Heart Association conference in 2024 found that people who followed a time-restricted eating plan were 91% more likely to die of cardiovascular disease than others who ate a typical diet. More research on the link between intermittent fasting and heart health is necessary, but this study raises important questions. Intermittent fasting is an eating pattern that cycles between periods of fasting and eating.
#2 Fewer Calories
Many people find that a moderate fast, finishing all food by 7pm and then waiting until 7 or 8am the next day before eating breakfast can offer a more sustainable approach, while still reaping some of the perceived benefits. The success of the approach may also depend on your ability to maintain this style of eating going forward. However, the typical weight loss is fairly minimal, and as with all diets, the weight tends to come back once the diet is over.
Food Preparation
Some nutritionists say that intermittent fasting may shed pounds quickly, but it may not be a sustainable approach to weight loss over the long term for some people. Overall, her research has found that intermittent fasting is as good as calorie counting when it comes to weight loss, with people losing, on average, 3% to 8% of baseline weight, depending on the type of fast they’re doing. And fasting can provide other health benefits, such as decreasing blood pressure and insulin resistance. To get the benefits of intermittent fasting, you need to fast for at least 12 hours. That’s how long it takes your body to switch from using glucose for energy to using fat for energy.
What are other health benefits for intermittent fasting?
Some research has shown that this time-restricted dieting method results in weight loss. However, a recent study by the American Heart Association (AHA) revealed that those following a time-restricted intermittent fasting plan have a 91 percent higher risk of death from heart disease. Some studies, but not all, show that intermittent fasting improves how the body uses the hormone insulin, which could help prevent or improve control of type 2 diabetes by lowering blood sugar levels. One 6-month study found that the form of intermittent fasting called time-restricted eating reduced blood sugar levels in people with unimeal reviews complaints type 2 diabetes.
What are the intermittent fasting methods?
- Some nutritionists say that intermittent fasting may shed pounds quickly, but it may not be a sustainable approach to weight loss over the long term for some people.
- You may wish to start with a longer window of “eating hours,” then gradually increase the fasting hours.
- They will consider your current health, medicines, and health history when making their recommendation.
- If you have trouble putting on weight, you’ll want to avoid fasting.
- When your body doesn’t have the glucose it needs for energy, it taps into your body’s fat for energy.
- Your body’s main source of energy is a form of sugar called glucose, which circulates in the blood.
Mitochondrial dysfunction and oxidative stress are characteristic features of both senescence and aging; moreover, they have been implicated in several diseases, such as ischemia–reperfusion (IR) injury [107,108]. Fasting may significantly protect against acute liver and kidney injury as well as renal fibrosis as shown in animal models of IR [107,109–111]. Fasting may also reduce DNA damage which is related to the upregulation of key DNA repair proteins such as apurinic/apyrimidinic endonuclease-1 [58].

However, when you fast for more than 12 hours, your body’s glucose levels start to dip because you’re not eating as frequently. When your body doesn’t have the glucose it needs for energy, /unimeal-weight-loss-app-review-12-reasons-to-trust/ it taps into your body’s fat for energy. When this happens, the fatty acids in your body are absorbed into your blood. Many people try fasting to lose weight, but if this isn’t something you can do forever – and if the plan isn’t sustainable – then you may regain that weight.
By reducing the amount of time you can eat, you’ll likely consume fewer calories without realizing it. First, human growth hormone (HGH) levels go up and insulin levels go down. Your body’s cells also change the expression of genes and initiate important cellular repair processes. This is still an emerging area of research and these links are as yet inconclusive. It is important to note that some of these studies have only been carried out using animal models, and it is unclear at the moment whether all of these benefits would be replicated in humans. The point at which you trigger the switch will depend on how much energy you use, what your last meal was and the amount of stored glycogen you have – all of which means it may take as much as hours without food.
Lifestyle Quizzes
Here are answers to the most common questions about intermittent fasting. You may also feel weak, and your brain may not perform as well as you’re used to. This might only be temporary, as it can take some time for your body to adapt to the new meal schedule.
Other common risks for older adults:

Some people try intermittent fasting to lose weight, while others believe it will improve their health. This is where you eat whatever you want five to six days of the week and choose one or two days a week to fast. During those fasting days, water and broth is encouraged so you don’t become dehydrated.
Nutrition know-how for patients taking anti-obesity medication
However, keep in mind that some supplements, like fat-soluble vitamins, may work better when taken with meals containing a fat source. Many supplements can also cause an upset stomach when you take them without food. Research has shown that it can help treat hyperandrogenism in people with polycystic ovarian syndrome (PCOS), which could potentially affect their ovulation and fertility. There is also some research that has linked IF to better cognitive function, heart health, and digestion.
Conditions and Diseases
If you’re curious about intermittent fasting, connect with your doctor or a registered dietitian to review your health history and reasons for considering IF. They can advise you on the safest approach to achieving your goals and preserving your health. Luka Dončić, point guard for the Los Angeles Lakers, had a much different experience with intermittent fasting.
Intermittent Fasting Benefits
But, behind the scenes, the ketones also may be having a positive effect on your body’s organs and cells. For more advice on nutrition, reach out to a registered dietitian to create a plan to help achieve your health and well-being goals. There’s no “perfect” fasting plan, and it really should be based on what works best in your life. Females should follow separate guidelines, like easing into the practice and stopping immediately if they have any concerns like missing periods. If you are considering IF, it’s best to talk with a doctor or dietitian to determine whether it is right for you.
Intermittent fasting is an eating plan that cycles between periods of fasting and eating. Many people use intermittent fasting to lose weight and improve their health. Stephen Riggs, MD, a family medicine provider at MercyOne Kimball Family Medicine and Pediatric Care and certified ketogenic expert, discusses seven benefits of intermittent fasting. Intermittent fasting (often called IF or time-restricted eating) is an eating approach that can help with weight loss. Intermittent fasting is a pattern of eating that includes regular periods of fasting. Unlike traditional diets, intermittent fasting does not include any rules on what foods “should” or “should not” be eaten; instead, it specifies when and when not to eat.
