Attention deficit hyperactivity disorder (ADHD) is a neurodevelopmental disorder that affects millions of people, both children and adults. The key characteristics are hyperactivity, impulsivity, and inattention. Because of many obstacles, researchers have been searching for other therapies—inclining to include diet intervention to control the symptoms of ADHD more effectively. One interesting area of research is that for chili peppers! Yes, you read it correctly, scientists are studying the effects of chilli peppers in order to help ease symptoms of ADHD through their action on gut microbiota and the gut-brain axis.

The gut-brain axis (GBA) is a two-way communication system that connects the gastrointestinal tract with the central nervous system. It has significant roles in brain function, emotional control, and cognitive processes. The most recent research indicates that gut microbiota- bacteria living in the digestive system can potentially affect ADHD by impacting the production of neurotransmitters and brain structure.

People with ADHD tend to have reduced levels of healthy gut bacteria, including Lactobacillus, and a less diverse gut microbiota. This imbalance can contribute to greater neuroinflammation and oxidative stress, both of which are involved in ADHD pathology.

Gut microbiota also control the production of dopamine and serotonin, two neurotransmitters critical for attention, impulse control, and emotional stability.

Can Chili Peppers Be A Natural Treatment For ADHD?

Chili peppers have bioactive molecules, such as capsaicin, vitamin C, and polyunsaturated fatty acids (PUFAs), that could affect symptoms of ADHD through modulation of the gut microbiota and neurotransmitter concentration.

Capsaicin, the phytochemical in chili peppers, has been found to modulate neurotransmitter levels. Experiments with animals reveal that capsaicin boosts the levels of serotonin and dopamine in the brain, which has the potential to enhance attention and impulse control.

Additionally, capsaicin has been shown to inhibit neuroinflammation and oxidative stress, both of which are associated with ADHD pathology. Through the reduction of these variables, capsaicin could help to decrease some ADHD symptoms. While animal models offer promising information, human studies are needed to ascertain if capsaicin supplementation can produce a concrete effect on ADHD symptoms.

Role of Vitamin C and Gut Microbiobe

Chili peppers are a rich source of vitamin C, a potent antioxidant that enhances immune function, neurotransmitter production, and iron absorption. New evidence indicates that vitamin C can also increase the prevalence of helpful microbes such as Lachnospiraceae in the gut microbiota. Gut microbial balance has been implicated in neurodevelopmental diseases such as ADHD, and vitamin C's activity in regulating gut microbes could potentially be used as a therapy.

Moreover, vitamin C also decreases brain inflammation, which tends to be higher in patients with ADHD.

Chili peppers are also rich in PUFAs, such as omega-3 and omega-6 fatty acids. Studies have established that patients with ADHD tend to have lower levels of omega-3 PUFAs, which are important for brain function, synaptic plasticity, and regulation of neurotransmitters. Omega-3 supplementation has been shown to enhance memory function and boost short-chain fatty acid (SCFA)-producing gut bacteria, which promote brain and gut health.

Given that PUFAs have anti-inflammatory properties and maintain cognitive function, their occurrence in chili peppers contributes to the accumulating data indicating dietary intervention may be effective in modulating ADHD symptoms.

Although chili peppers have bioactive substances that could affect the gut-brain axis and help alleviate ADHD symptoms, their impact is speculative until stricter human trials are carried out. Being a readily available food item, peppers can be used as a possible adjunct therapy, which can be added to conventional ADHD treatments. Peppers, however, cannot be used as a substitute for established medical therapies, including behavioral therapy and prescription drugs.

The developing connection between nutrition, gut microbiome, and ADHD has paved the way for exploring non-medication interventions. Chili peppers, rich in capsaicin, vitamin C, and PUFAs, represent a novel yet unproven method for modulating ADHD symptoms. While early research points towards a possible intervention by chili peppers in modulating neurotransmitter content and minimizing neuroinflammation, human studies are essential to validate the observations.

Intermittent fasting has built a reputation as a modern shortcut to weight loss. Social media, wellness blogs, and celebrity endorsements have helped position it as more effective than simply eating less. But a large scientific review now suggests the reality is far less dramatic.

Researchers analyzing global evidence found fasting plans do not outperform conventional calorie controlled diets. In fact, the results were only slightly better than not dieting at all.

The analysis examined 22 studies involving adults who were overweight or living with obesity. Participants followed different fasting approaches including alternate day fasting, the 5:2 diet, and time restricted eating. Across the board, weight loss outcomes closely matched traditional dietary advice.

Lead author Dr Luis Garegnani told the Guardian, “Intermittent fasting is not a miracle solution, but it can be one option among several for weight management.” He added, “It likely yields results similar to traditional dietary approaches for weight loss. It doesn’t appear clearly better, but it’s not worse either.”

Weight Loss Results Were Modest

Participants who followed fasting routines lost about 3 percent of their body weight. Doctors generally consider 5 percent loss clinically meaningful for improving health markers like blood pressure and diabetes risk.

This means most people in the trials did not reach the level where measurable health benefits usually begin.

The review also noted the studies were short term, lasting up to 12 months. So while fasting did produce some reduction, the scale of change remained modest.

Surprisingly, the research found little evidence that fasting improved quality of life more than other diets. Researchers also pointed out that none of the studies actually asked participants how satisfied they were with fasting routines.

Garegnani told the Guardian that many fasting studies are short and often inconsistent in design, making firm conclusions difficult. Given how widely fasting is promoted, he said clarifying expectations is important.

Why Fasting Became Popular

Intermittent fasting involves limiting eating to specific hours or skipping food on certain days. Supporters claim it can boost metabolism, improve brain function, and slow ageing.

Some biological theories do support potential benefits. Dr Zhila Semnani Azad from the National University of Singapore explained that metabolism follows circadian rhythms, and fasting may influence how the body uses fat. Research in animals suggests fasting can improve insulin sensitivity and reduce inflammation. It may also trigger autophagy, a cellular recycling process linked to ageing.

However, she noted that there is no universal definition of intermittent fasting, which makes comparing studies difficult.

The Body Adapts Quickly

Professor Maik Pietzner from the Berlin Institute of Health said the limited weight loss was not entirely surprising. He explained that people often become less physically active during fasting periods, which may offset calorie reduction.

He told the Guardian, “If people feel better on such diet regimens, I wouldn’t stop them, but there’s no robust evidence for positive effects beyond a possible moderate weight loss.”

His research also shows the body tolerates food scarcity very well. Even complete fasting for short periods causes only minor biological changes.

What This Means For Dieting

The findings suggest intermittent fasting is not harmful for most people but it is not superior either. Traditional balanced diets remain just as effective for weight management.

In simple terms, fasting works mainly because people eat fewer calories, not because it triggers a special fat burning state.

For those who enjoy structured eating windows, fasting may still be a practical lifestyle choice. But the study reinforces a clear message. Sustainable habits matter more than trendy diet patterns, and no eating schedule replaces long term consistency.

Erythritol sweetener, commonly found in most of the food we consume, whether it is a protein bar or energy drink could be linked to stroke risk. While it is considered as a safer alternative to sugar as a natural sweetener, a study from the University of Colorado suggests it could damage cells in the blood-brain barrier.

The blood-brain barrier is brain's security system that keeps the harmful substance off the limits, while letting in nutrients. Research also suggests that it would lead to serious consequences for heart health and stroke risk.

Erythritol Sweetener Risk: What Did The Study Find?

In the latest study, researchers exposed cells that form the blood–brain barrier to erythritol levels typically seen after consuming a soft drink sweetened with the compound. What followed was a cascade of cellular damage that could leave the brain more vulnerable to blood clots, one of the leading causes of stroke.

The researchers found that erythritol triggered intense oxidative stress, overwhelming cells with unstable molecules known as free radicals. At the same time, it weakened the body’s natural antioxidant defences. This double hit impaired normal cell function and, in some cases, led to cell death.

Damage to blood–brain barrier cells is particularly concerning because this barrier plays a crucial role in protecting the brain from harmful substances circulating in the bloodstream. When its integrity is compromised, the risk of neurological injury rises sharply.

Erythritol Sweetener Risk: How It Disrupts Blood Flow Control

Even more troubling was erythritol’s effect on how blood vessels regulate blood flow. Healthy blood vessels constantly adjust their width—expanding when organs need more oxygen and nutrients, and narrowing when demand is lower.

This process depends on a delicate balance between two molecules: nitric oxide, which relaxes blood vessels, and endothelin-1, which causes them to constrict. The study found that erythritol disrupted this balance by reducing nitric oxide production while increasing endothelin-1 levels.

The result is blood vessels that stay constricted longer than they should, potentially restricting blood flow to the brain. This kind of dysfunction is a known warning sign for ischaemic stroke, the most common form of stroke caused by blocked blood vessels.

Erythritol Sweetener Risk: How It Interferes With Body's Clot Defense

The most alarming finding in the study was how body's natural protect against blood clot is disturbed. Under normal circumstances, cells release a substance called tissue plasminogen activator, which is described as a natural 'clot buster', which helps dissolve clots before they become dangerous. However, erythritol could interfere with this protective mechanism and allow clots to persist and cause damage.

Several have shown that people with higher blood levels of erythritol face significantly increased risks of cardiovascular events. In one major study, individuals with the highest erythritol levels were nearly twice as likely to suffer a heart attack or stroke.

However, researchers caution that the experiments were conducted on isolated cells rather than full blood vessels. More advanced models that better replicate human physiology will be needed to confirm the findings.

Erythritol occupies a unique space in the sweetener world. Classified as a sugar alcohol rather than an artificial sweetener, it escaped recent World Health Organization guidance discouraging artificial sweeteners for weight control. Its sugar-like taste has also made it a favorite in “keto-friendly” and sugar-free foods.

Ultra-processed foods (UPFs) have been dominating nutrition debates in recent months, but experts say not all UPFs deserve equal concern. Some may be far more disruptive to metabolic and heart health than others, depending on ingredients and frequency of consumption.

UPFs are industrially manufactured products that typically contain refined flours, industrial seed oils, added sugars, preservatives, emulsifiers and stabilizers. Several studies have linked high UPF consumption to obesity, metabolic disorders and cardiovascular disease. One recent study even suggested that eliminating UPFs could significantly accelerate weight loss, while others have connected them to a higher risk of chronic illness.

Speaking to Fox News Digital, Eric Berg, a Florida chiropractor and health educator known online as "the Knowledge Doc," highlighted five commonly consumed ultra-processed foods that may warrant extra caution.

Ketchup: Small Amounts, Hidden Sugars

Ketchup may seem harmless, but many commercial varieties contain significant amounts of added sugar, often in the form of corn syrup. Even when consumed in small quantities, frequent use can steadily increase daily sugar intake.

Over time, this added sugar may contribute to excess calories and disrupt metabolic health. Checking ingredient labels and opting for low-sugar or sugar-free alternatives can help reduce this hidden source of sweetness.

Flavored Yogurt: A Health Halo Problem

Yogurt is widely perceived as a health food, but flavored versions can be misleading. Many contain added sugars, artificial sweeteners and stabilizers that outweigh their nutritional benefits.

While yogurt itself can support gut health—especially when fermented with beneficial bacteria—experts stress that the health impact depends heavily on sugar content, ingredients and portion size. Choosing plain yogurt and adding fresh fruit or natural sweeteners at home is often a better option.

Soda Crackers: Refined and Deceptive

Soda crackers are often marketed as a light or “safe” snack, yet they frequently contain refined flours, added sugars and unhealthy oils. These refined ingredients are quickly digested, which may trigger blood sugar spikes, particularly when eaten without fiber or protein.

Healthier alternatives include whole-food-based crackers made from nuts or seeds, which offer more fibre, nutrients and longer-lasting satiety.

Candy Bars: More Than Just Sugar

Candy bars are one of the most obvious examples of ultra-processed foods. They are typically made with refined starches, seed oils and artificial additives while offering little to no nutritional value.

Frequent consumption of such products has been linked by nutrition experts to poorer metabolic health over time. The concern isn’t just sugar, but the combination of unhealthy fats, refined carbohydrates and additives that may collectively strain cardiovascular and metabolic systems.

Ice Cream Cones: The Overlooked Culprit

Interestingly, it’s not the ice cream itself but the factory-made cone that raises red flags. These cones are often ultra-processed, containing refined flours, added sugars, unhealthy oils and artificial ingredients.

When paired with commercial ice cream, the result can be a “double hit” of sugar, unhealthy fats and additives, significantly lowering the overall nutritional quality of the treat.

The Bigger Picture

Experts emphasize that moderation matters, and occasional indulgence isn’t the issue. The real concern lies in habitual consumption of ultra-processed foods that quietly dominate daily diets. Reading labels, prioritising whole foods and being mindful of ingredient lists can go a long way in protecting long-term health.