The global obesity epidemic, affecting over one billion people worldwide, is largely driven by eating behaviors. Appetite, influenced by both intrinsic and environmental factors, plays a crucial role in weight management. A recent study how exercise affects appetite perception in obese males, shedding light on the physiological mechanisms behind hunger suppression post-exercise.

While exercise is well-known for its benefits in weight management, its direct impact on appetite control has remained a subject of debate. Appetite is regulated by a complex network of gastrointestinal and neurohormonal signals, including hormones like ghrelin, leptin, interleukin 6 (IL-6), and neuropeptide Y (NPY). These hormones influence hunger levels, satiety, and energy balance.

The study published in Physiological Reports examines investigated how moderate continuous aerobic exercise (MICE) alters these hormone levels in obese men, ultimately affecting their hunger perception. The findings reveal that certain myokines and cytokines shift dynamically post-exercise, potentially reducing appetite and offering a promising strategy for weight management.

Hormonal Responses to Exercise

The study found that after exercise, there was a significant increase in IL-6 and irisin levels in the exercise group compared to those who remained sedentary. These elevated concentrations persisted for an hour after working out. IL-6 has been associated with regulating metabolism and enhancing fat oxidation, while irisin plays a role in converting white fat into more metabolically active brown fat.

Conversely, the study reported a decrease in neuropeptide Y (NPY) levels, a key neurotransmitter responsible for stimulating appetite. The decline in NPY levels post-exercise suggests a temporary suppression of hunger, supporting the idea that exercise can curb cravings. However, the study did not observe significant changes in IL-7 or leptin levels, two other hormones involved in appetite regulation.

Why Some People Struggle to Lose Weight

Ghrelin, often called the “hunger hormone,” stimulates appetite by increasing activity in specific areas of the brain. Individuals with higher ghrelin levels generally find it harder to lose weight because their bodies signal hunger more frequently.

Research suggests that dieting can lead to an increase in ghrelin levels, making weight loss challenging. Certain medical conditions, such as Hashimoto’s thyroiditis, Prader-Willi syndrome, anorexia nervosa, and bulimia nervosa, are also linked to elevated ghrelin levels, complicating appetite regulation further.

Challenges in Implementing Exercise for Appetite Control

While exercise has clear benefits, the findings should be interpreted with caution. He pointed out that the study had a small sample size, making it difficult to draw definitive conclusions.

Moreover, he highlighted the challenges faced by obese individuals in maintaining an intensive exercise routine. While exercise-induced appetite suppression is promising, consistently engaging in high-intensity workouts may be unrealistic for those who struggle with mobility or fitness levels. More extensive studies are needed to determine the optimal exercise duration and intensity for effective appetite suppression.

Tips to Naturally And Safely Suppressing Appetite

Besides exercise, there are several strategies individuals can use to naturally suppress their appetite and improve satiety:

Increase Protein Intake: Protein-rich foods, such as lean meats, legumes, and dairy, promote feelings of fullness and reduce hunger.

Stay Hydrated: Drinking water before meals can help control portion sizes and prevent overeating.

Opt for Fiber-Rich Foods: Whole grains, vegetables, and fruits high in fiber take longer to digest, keeping you full for longer.

Reduce Simple Carbohydrates and Sugars: Simple carbs and sugars cause rapid spikes and crashes in blood sugar levels, leading to increased hunger.

Prioritize Sleep: Poor sleep disrupts hunger-regulating hormones, making it harder to control cravings.

Manage Stress: Chronic stress increases cortisol levels, which can lead to overeating and weight gain.

The study’s findings indicate that moderate exercise can temporarily suppress appetite by altering key hormones. While more research is needed to refine the details—such as optimal workout duration and intensity—this insight adds to the growing body of evidence supporting exercise as a tool for appetite regulation and weight management.

For individuals looking to curb cravings and maintain a healthy weight, incorporating a well-balanced diet alongside regular exercise remains the most sustainable approach. Future studies focusing on larger populations and long-term effects could provide deeper insights into how exercise can be optimized for appetite control, making it an effective strategy in combating obesity.

Exercise alone is not a magic solution for weight loss, but its impact on appetite hormones presents a promising avenue for managing hunger and energy balance. As research continues to evolve, it becomes increasingly clear that integrating physical activity with mindful eating habits can play a vital role in achieving and maintaining a healthy lifestyle.

Most athletes and gym-goers cannot help but boast about the many benefits of creatine. When it comes to boosting performance and supporting muscle growth, this supplement is trusted often.

But a new study suggests that creatine may also have benefits when you are out of the gym. But the researchers caution that it does not mean that creatine can replace exercise, especially strength training.

Researchers at Texas A&M University found that adults who took creatine gained lean tissue and improved muscle strength even when they did not follow a structured exercise programme. The 12-week study was published in the Journal of the International Society of Sports Nutrition.

Could Creatine Help Build Muscle?

The study is based on 64 healthy adults aged 45 to 65 who completed the 12-week intervention. Participants were divided into exercise and non-exercise groups and were randomly assigned to take either 10 grams of creatine monohydrate or a placebo every day.

The exercise group followed resistance and aerobic training three times a week, while the other participants did not follow a structured exercise programme.

Among those who did not exercise, those taking creatine gained about 2.4 pounds (1.1 kg) of lean tissue over 12 weeks. They also improved their leg and bench-press strength. Those who combined creatine with exercise saw even greater improvements in strength.

Creatine occurs naturally in the body and helps cells produce energy. Most of the body's creatine is stored in skeletal muscle, where it helps regenerate ATP, the main source of energy for the cells.

This is one reason creatine has traditionally been associated with better performance during short, intense exercise. The researchers believe its ability to support cellular energy may also help preserve or even increase lean tissue, especially in middle-aged adults.

Also read: 21% In 80 Weeks: Lancet Study Finds Lilly’s Retatrutide Delivers One Of The Biggest Weight Losses Ever

Creatine & Weight Loss

The study also studied whether creatine could help people preserve muscle while losing weight.

Participants following the exercise and low-calorie diet who took creatine gained nearly 3 pounds of lean tissue while reducing fat mass.

The exercise and diet group taking placebo showed little change in lean tissue. Creatine was also associated with a greater reduction in body fat percentage. This could be relevant during weight loss, when some muscle loss may occur along with fat loss.

No, Creatine Will Not Replace Exercise

The small study is lasted only 12 weeks and also involved healthy adults aged 45 to 65, so the results cannot be applied to younger people, older adults with health conditions, or other people with muscle disorders.

The findings are also somewhat different from the much larger body of evidence showing that creatine's most established benefits occur when it is combined with resistance training.

Maintaining muscle becomes crucial with age. Loss of muscle mass and strength can affect mobility and physical function. The Texas A&M researchers say the findings add to growing interest in creatine as a tool for healthy ageing and maintaining muscle.

Eli Lilly’s highly anticipated GLP-1 weight-loss drug retatrutide has delivered nearly 21% average weight loss in people with type 2 diabetes and obesity, according to results from a large Phase 3 trial published in The Lancet. In an ever-expanding weight loss medication market, retatrutide is already showing significant promise in obesity and diabetes management.

The drug, retatrutide, is being developed by Eli Lilly and is not approved by the FDA yet. In the TRIUMPH-2 trial, people receiving the highest 12 mg dose lost an average of 20.8% of their body weight over 80 weeks, equivalent to about 49.6 pounds or 22.5 kg.

The findings about retatrutide's trial were presented at the European Association for the Study of Diabetes (EASD) annual meeting in Milan and published simultaneously in The Lancet.

How Is Retatrutide Different From Other GLP-1 Drugs?

Retatrutide is a triple agonist because it activates three hormone receptors:

• GIP
• GLP-1
• Glucagon

GLP-1-based medicines are already widely used for diabetes and obesity. Retatrutide activates GIP and glucagon pathways as well, creating a three-way approach to manage appetite, blood sugar and metabolism. The drug is given once weekly by injection and remains experimental and investigational.

Also read: World Heart Day: You Feel Healthy. But Plaque May Already Be Building In Your Arteries In Your 20s

Retatrutide Weight Loss Results

TRIUMPH-2 included adults with obesity or overweight and type 2 diabetes. Participants receiving retatrutide were assigned to 4 mg, 9 mg or 12 mg doses and followed for 80 weeks. The average weight loss was:

• 4 mg: 12.7%
• 9 mg: 19.1%
• 12 mg: 20.8%
• Placebo: 4.0%

The response was even greater among participants who started the study with a BMI of at least 35. Those receiving 12 mg lost an average of 23.4% of their body weight, or about 60.8 pounds.

By week 80, 59.5% of people taking 12 mg no longer met the BMI criteria for obesity.

Also read: 100% Blockage At 18, 25% Patients Under 40: On World Heart Day, Cardiologists Reveal An Alarming Heart Attack Pattern

Retatrutide Blood Sugar Results

Retatrutide not only led to one of the biggest weight losses ever seen, it also improved HbA1c, a measure of average blood glucose over the previous two to three months. At 80 weeks, HbA1c fell by:

• 1.4 percentage points with 4 mg
• 1.6 percentage points with 9 mg
• 1.5 percentage points with 12 mg

Up to 40% of participants receiving retatrutide achieved an HbA1c below 5.7%, which is within the normal range.

The Next Big Weight-Loss Drug?

The results are certainly seem promising, particularly as people with type 2 diabetes can sometimes lose less weight with obesity medicines than people without diabetes.

Retatrutide's combination of substantial weight loss and improved blood sugar control makes it an important drug to watch in a competitive GLP-1 market.

Since it's not approved yet, more evidence will be needed on its long-term safety, cardiovascular effects and how its benefits compare with existing treatments. It is also worth remembering that the 20.8% figure represents an average, not the amount every participant lost.

Retatrutide's development is a sign that obesity and diabetes treatment is extending beyond just managing blood sugar. The next generation of drugs is all about targeting weight, glucose and metabolism together.

Exercise is good for the heart. That part is not in question. But on the occasion of World Heart Day, doctors say the way you exercise, and how suddenly you start, can matter just as much as whether you exercise at all.

The Weekend Warrior Problem

A lot of us live sedentary weekdays and then try to make up for it with one hard gym, swimming or sports session over the weekend. Dr Dhirendra Singhania, Director of Interventional Cardiology at Yashoda Medicity, says this pattern puts real strain on the body. "In an untrained person, a sudden switch to a much increased load in terms of time or intensity of training is a huge physiological stress on the heart," he told Health and Me.

Dr Ajeet Singh, Senior Consultant and Head of Cardiology at ShardaCare Healthcity, describes the same risk from the other direction. "Stepping into a sedentary lifestyle with a sudden burst of extreme activity, and vice versa, can strain the heart," he told Health and Me. Weekend sport, after a week of sitting, is one of the most common triggers.

Dr Udgeath Dhir, Principal Director, Cardio Thoracic and Vascular Surgery at Fortis Gurugram, points to a related trend: people jumping straight into long-distance running or marathon training without building up to it. "Suddenly pushing an untrained body into long-distance running, marathon training or extreme high-intensity workouts can place unnecessary acute stress on the cardiovascular system," he says.

What the Research Shows

Medical literature backs this up. New England Journal of Medicine study found that people who exercised regularly were far better protected against a heart attack being triggered by sudden exertion than those who rarely worked out. Research published in Circulation notes that the least fit individuals face the greatest risk during sudden physical effort. Doctors describe this as a fitness "buffer". A trained heart handles a sharp rise in oxygen demand and blood pressure far better than an untrained one.

This doesn't mean irregular exercise is pointless. A large 2023 study in JAMA, using activity-tracker data from close to 90,000 people, found that "weekend warriors" who packed their exercise into one or two days had a similarly lower cardiovascular risk to people who spread activity evenly through the week. The catch, researchers noted, is that this benefit shows up in people who are already getting regular activity in some form. Suddenly forcing an untrained body into a high-intensity session is a different scenario altogether.

Read More: 100% Blockage At 18, 25% Patients Under 40: On World Heart Day, Cardiologists Reveal An Alarming Heart Attack Pattern

Who Should Be Extra Careful

All three doctors agree that people with undiagnosed heart problems, high blood pressure, high cholesterol, diabetes or a family history of heart disease need to be more cautious. Dr Singh says this doesn't mean exercise should be avoided. It simply has to match "age, fitness level, and overall health and medical history." Dr Singhania advises anyone with existing heart disease or risk factors to consult their doctor before starting intense activity.

Warning Signs to Watch For

All three point to the same red flags. Chest pain or pressure, unusual breathlessness, dizziness, a racing heart, or simply feeling off during exercise. Dr Singhania lists "angina, unusual breathlessness, pre-syncope, syncope and palpitations" as symptoms that should never be ignored.

The advice from all three doctors is simple. Warm up. Build intensity gradually. Cool down. Stay hydrated. And if something feels wrong mid-workout, stop and consult a doctor rather than trying to push through the discomfort. As Dr Dhir puts it, "Fitness is not about pushing the body to its maximum every day; it is about building a level of fitness that your individual heart can safely sustain."