You are what you eat, and to science it is true. People live longer based on what they choose to eat. With such a thought, Canadians took on to a UK-based challenge of eating vegan for a month. The challenge is called Veganuary (Vegan + January). For many, it is not a hidden fact that eating less meat and more plants is good for our health and it can cut food-related emissions, which make up to a third of the greenhouse causing climate change. However, going vegan isn't really a smooth change, rather a big step. It means to revamp our entire diet.

The good news is, that there have been researches that prove that even relatively small substitutions of red meat with plant-based proteins like tofu, lentils and beans can add months, sometimes years to our expected lifespan. It can also make a noticeable dent in our carbon footprint.

The Rise Of Vegetarianism

As per 2018, only 7.1% of Canadians were vegetarian and 2.3% were vegan. Olivia Auclair, a research fellow at the University of Oxford, who researched on Canadian's eating habits told CBC that Canadians get 65% of their protein from animal sources. Only 5% of the protein comes from the high-protein plant-based sources. Some of these are also included in Canada's Food Guide.

It is true that eating habits, along with shopping habits are hard to change, this is why Auclair's research tried to bring people more in line with the food guide. The Canada Food Guide recommends lots of fruits, vegetables and whole grain, along with protein from both animal and plant sources.

ALSO READ: Is Plant-Based Cheese The Future?

What is the study all about?

Her research was published last year in the journal Nature Food, titled Partial substitutions of animal with plant protein foods in Canadian diets have synergies and trade-offs among nutrition, health and climate outcomes, found that replacing half their red and processed meat would increase people's life expectancy an average of nine months, while cutting their diet-related carbon footprint by 25%.

For her research, she analyzed what 13,600 Canadians ate based on the Statistics Canada data from "food diaries" recorded by them in 2015. After that, she modelled what could happen if the same people substituted 25 to 50% of the red and processed meat they had been consuming with plant-based proteins. However, they did not change their poultry, fish or seafood intake.

The results were great, as mentioned above. In fact, there was more. The health benefits were double for men compared to women!

Men gained one full year of increased life expectancy, on average. This is also because men eat more red and processed meats and the climate benefits were also higher for men cutting down on the meat.

CHECK OUT: Can A Vegan Diet Help You Loose Weight ?

Plant-based Diets

In 2019, an international group of scientist recommended a planetary health diet, a plant-based diet rich in fruits, vegetables, legumes, nuts and whole grain, with small amounts of meat, dairy and fish, similar to what is recommended by the Canada Food Guide. The reason for such a recommendation was also to prevent 11 million deaths per year from processed meats and help keep greenhouse gas emission from food.

Another US study that looked at 200,000 US healthcare workers found that eating a plant-based diet could reduce a person's risk of dying by 30% from heart diseases, cancers, and respiratory diseases. Another 2021 Swedish study found a similar benefit, where it saw a 25% drop in mortality for those who adhere to a plant-based diets.

People living with irritable bowel syndrome (IBS) often face difficulties in balancing certain dietary components. Foods rich in fibre can support their gut health, but certain fermentable carbohydrates may trigger bloating, abdominal pain and changes in bowel habits.

But researchers have tested a specially formulated fibre supplement that can help improve gut bacteria without aggravating common IBS symptoms.

The study, conducted by researchers at Edith Cowan University in Australia, examined a supplement called ur gut®, which combines resistant starch and psyllium husk.

The findings, published in the European Journal of Nutrition, suggest that the formulation improved the gut microbiome and reduced gut anxiety in people with IBS who were following a low-FODMAP diet.

Participants did not experience a worsening of their digestive symptoms during the intervention. However, the researchers describe the findings as preliminary, as the trial involved only 26 participants and lasted three weeks.

Increasing Fibre Be Difficult For People With IBS

Also read: IBS Is Not Just A Gut Problem: Lancet Review Explains The Gut-Brain Connection

Fibre is key for maintaining digestive health because it supports bowel movements and provides nourishment for beneficial gut bacteria. However, people with IBS can be sensitive to certain carbohydrates that are fermented by intestinal bacteria, producing gas and abdominal discomfort.

One dietary method commonly recommended for managing IBS is the low-FODMAP diet. It involves temporarily restricting foods containing fermentable oligosaccharides, disaccharides, monosaccharides and polyols. These carbohydrates can be poorly absorbed in the small intestine and rapidly fermented in the colon, contributing to bloating, gas and abdominal pain.

Although the diet can help manage symptoms, prolonged restriction may also reduce the intake of certain fibres and affect the composition of gut bacteria.

Lead researcher Dr Tina Yan explained the challenge, “For years we've known that a diet low in Fermentable Oligosaccharides, Disaccharides, Monesaccharides and Polyols (FODMAPs) can relieve symptoms, but they can also reduce beneficial gut bacteria and negatively impact fiber intake over time.”

The research team wanted to explore whether fibre could be reintroduced in a way that supported the gut microbiome without making symptoms worse.

More About The New Fibre Supplement

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The ur gut® formulation combines two ingredients: resistant starch and psyllium husk. Resistant starch is a type of carbohydrate that resists digestion in the small intestine and reaches the colon, where gut bacteria ferment it. This process produces short-chain fatty acids, including butyrate, which help support the health of the intestinal lining.

Psyllium is a soluble fibre commonly used to support bowel health. Researchers believe it may slow the breakdown of resistant starch, allowing more of it to reach deeper sections of the colon before fermentation occurs.

This could help people with IBS obtain some of the benefits of fermentable fibre while limiting the digestive discomfort that can accompany rapid fermentation.

What Did The Study Find?

The randomised, double-blind trial included 26 adults with IBS who had already been following a low-FODMAP diet. Participants were divided into two groups, with 13 receiving the fibre supplement and 13 receiving a placebo.

The intervention lasted three weeks, following a one-week baseline period. The researchers monitored digestive symptoms, dietary intake, gut bacteria, sleep, mental health and quality of life. The main findings included:

• No worsening of IBS symptoms: Participants receiving the supplement maintained stable digestive symptoms, including abdominal discomfort and changes in bowel habits.

• Changes in gut bacteria: The supplement group showed changes in the composition of gut bacteria. The abundance of a bacterial genus called Ruminococcus E increased approximately 5.5-fold.

• Higher fibre intake: Total dietary fibre intake in the supplement group increased to an average of 33.1 grams per day by the end of the intervention.

• Reduced gut anxiety: Participants reported improvements in gastrointestinal anxiety.

Dr Yan said, “What's exciting about this study is that participants maintained stable symptoms while showing meaningful improvements in their gut microbiota as well as in their gut-related anxiety.”

Professor Amanda Devine, co-creator of the supplement, added, “Changes of this magnitude are rarely seen with such a short intervention.”

Our sleep can be influenced by what we eat, especially the quantity and timing of the food intake before bedtime; however, food is not the primary regulator of our sleep-wake cycle.

A large, heavy or fat-rich meal close to bedtime can prolong digestion and worsen acid reflux, which may fragment sleep. In contrast, a small, easily digested snack may be useful when someone is genuinely hungry before bed.

Certain foods containing tryptophan, which is a building block for serotonin, subsequently help in the production of melatonin in the body. Melatonin is the key regulator of our body’s sleep cycle. However, the effects of food-derived melatonin on human sleep are modest and less predictable than the body's own circadian melatonin secretion.

Emerging evidence shows that the timing of meals itself is relevant to circadian health. Later eating patterns are associated with poorer sleep outcomes.

Nutrients for promoting restorative sleep

Magnesium supports neuromuscular function and several pathways relevant to relaxation and sleep regulation. Scientific studies associate adequate magnesium status with better sleep, and studies have found a small improvement in insomnia symptoms with magnesium bisglycinate, particularly among people with lower dietary magnesium intake.

Tryptophan is an essential amino acid and a precursor of serotonin and melatonin. Evidence suggests that increasing tryptophan availability can modestly improve sleep, although the dose and specific population that will benefit remains controversial.

Carbohydrates may influence the availability of tryptophan to the brain. High-quality carbohydrates and fibre have generally been associated with better sleep, although the relationship is not straightforward. However this does not imply that eating a large amount of sugar before bed is beneficial.

Also read: Why Do We Feel Dull After Lunch? Simple Ways To Beat Mid-day Slump Without Caffeine

Benefits of different nighttime snacks

Tart cherry juice with chia seeds

Tart cherries contain melatonin and polyphenols, and small clinical studies have reported improvements in sleep duration and efficiency. Chia seeds contribute fibre and magnesium, but there is no strong evidence that chia seeds itself is a sleep-promoting food. The juice portion should be kept modest, especially for someone with diabetes or glucose intolerance.

Warm nutmeg milk

Milk provides protein and tryptophan. However, there is no convincing clinical evidence that nutmeg itself improves sleep. Consuming concentrated or large quantities of nutmeg can cause more harm than good.

Pumpkin seeds with banana

This combination is biologically plausible as a light evening snack, as it is nutritionally well balanced. The pumpkin seeds provide magnesium and tryptophan, while the banana provides carbohydrate and potassium. However, the pumpkin seeds are calorie-dense, and so the serving should be kept moderate

Greek yoghurt with raw honey

Greek yoghurt, like milk, provides protein and tryptophan. Fermented dairy foods are associated with favourable dietary patterns, although direct evidence that Greek yoghurt itself improves sleep is limited. A small amount of honey provides carbohydrate, which may potentially assist tryptophan availability.

Almond butter on sourdough

This provides a combination of carbohydrate, protein and healthy unsaturated fat. The carbohydrate component may support tryptophan availability, while the almond butter adds magnesium and protein.

Kiwi slices

A small study has found that eating two kiwi fruits about an hour before bed improved sleep onset, total sleep time and sleep efficiency. The mechanisms may involve antioxidants, serotonin and other bioactive compounds, but the evidence is still preliminary. It is naturally portion-controlled and relatively light, making it a practical evening option.

Chamomile-oat porridge

Oats provide complex carbohydrates, fibre and some magnesium, while chamomile has traditionally been used for relaxation. However, there isn’t strong evidence to call this combination a proven sleep therapy.

Walnuts

Walnuts contain melatonin, magnesium and healthy polyunsaturated fats, making them nutritionally interesting for sleep. A small handful is sufficient, as their high calorie and fat content makes large portions unnecessary before bed.

Also read: The Indian Vegetarian Paradox: Can A Vegetarian Diet Still Leave You At Risk Of Diabetes?

Ideal time for nighttime snack and right portion size

For most people, I would recommend about 1–2 hours before bedtime, and the snack should be genuinely small, and it should not be a second dinner. For calorie-conscious people, the amount should be roughly 100 to 200 calories, depending on the individual’s need, activity level and reason for eating. The goal is to take the edge off hunger without creating substantial digestive work.

Are there foods on this list that could potentially disrupt sleep, digestion or blood sugar when consumed late at night?

It is important to note that the portion and timing of the food, along with individual metabolic health conditions, determine the effect of food on sleep to a much larger extent than the type of food itself.

However, having cherry juice and honey can produce a significant glucose load, especially in diabetic patients. This requires caution. Nut butter, walnuts, and pumpkin seeds are calorie-dense and rich in fat and hence can feel heavy close to bedtime.

Most importantly, any large snack eaten close to lying down can worsen reflux, particularly in people who already have gastroesophageal reflux disease. It is better to avoid meals within approximately 2–3 hours of bedtime in patients with reflux symptoms.

Who should have a bedtime snack and who should avoid?

A bedtime snack is not necessary for everyone. It may be useful for someone who is genuinely hungry before bed, for people with increased energy requirements such as athletes during heavy training, or when a long gap between dinner and breakfast makes hunger interfere with sleep. In those situations, a small balanced snack can be preferable to going to bed uncomfortably hungry.

On the other hand, people with night-time reflux, significant indigestion, delayed gastric emptying, or difficulty controlling their calorie intake should generally avoid substantial food close to bedtime. People with diabetes should also individualise bedtime snacks according to their glucose-lowering therapy and glucose pattern rather than assuming that a bedtime snack is universally beneficial.

By Dr. Subho Sarkar, Consultant, Pulmonary & Sleep Medicine, Sir HN Reliance Foundation Hospital

In India, vegetarian food is often considered a healthier choice, and many people believe that avoiding meat automatically reduces their risk of lifestyle diseases.

The traditional Indian vegetarian diet, rich in lentils, vegetables, whole grains and legumes, has long been seen as a cornerstone of good health. Yet India faces a staggering diabetes epidemic, with over 101 million people living with diabetes and millions more at the pre-diabetic stage. This contradiction is often called the "Indian vegetarian paradox". As doctors, we need to look beyond whether someone eats vegetarian or non-vegetarian food and understand what actually goes into their daily meals.

A person can follow a completely vegetarian diet and still be at risk of developing type 2 diabetes. This does not mean that vegetarian food is unhealthy. The root of the paradox lies not in vegetarianism itself, but in what makes up the contemporary Indian plate.

Traditional diets relied on complex carbohydrates, high fibre and unrefined grains. Modern eating habits have shifted heavily towards refined carbohydrates such as polished white rice, white flour (maida) and packaged snacks. Indian vegetarian cooking also often includes generous amounts of oil, ghee, full-fat dairy and sugar in sweets and beverages.

How The Modern Indian Vegetarian Plate Can Affect Blood Sugar

Consider a typical Indian meal. A large serving of rice or chapati, accompanied by a small portion of dal and limited vegetables, may look like a regular home-cooked meal.

However, if this pattern is repeated every day, the overall carbohydrate intake can become quite high. When the diet is also low in fibre and protein, it triggers sharp spikes in blood glucose after meals. Over time, these repeated spikes overwhelm the pancreatic beta cells and accelerate insulin resistance, making blood glucose harder to manage, particularly in people who already have insulin resistance.

Interestingly, the ICMR-INDIAB dietary study published in Nature Medicine in 2025, which analysed dietary patterns among 18,090 Indian adults, highlighted the high consumption of low-quality carbohydrates and relatively low protein intake in Indian diets. Its analysis also suggested that replacing a portion of carbohydrate intake with plant-based or dairy protein was associated with a lower likelihood of type 2 diabetes.

Also read: Delhi Air Pollution: PM2.5 Exposure May Raise Type 2 Diabetes Risk By 16%, Study Finds

Why Switching To Millets Or Whole Wheat May Not Be Enough

Another misconception is that replacing white rice with millets or switching to whole wheat is enough to prevent diabetes. High-fibre millets and whole grains can certainly be part of a healthy diet, but the quantity consumed and the overall balance of the meal matter just as much. Simply changing the grain without addressing portion sizes may not make a significant difference.

We also need to pay attention to what people eat between meals. Biscuits, bakery products, packaged snacks and sweetened beverages are often considered harmless because they are vegetarian. However, many of these foods contain refined carbohydrates, added sugar, trans fats and excess calories.

Why Indians Can Develop Diabetes Even At Lower Body Weights

There is also an important Indian-specific concern. Diabetes does not affect only people who are visibly overweight.

South Asians have a distinct metabolic profile, with more fat around the abdominal organs, more fat deposited in the liver and lower muscle mass relative to body fat.

This makes them more susceptible to type 2 diabetes even at lower body weights and BMI levels. Family history, physical inactivity and poor sleep can further increase the risk.

How To Make A Vegetarian Diet More Diabetes-Friendly

The answer is not to give up vegetarian food. Instead, we should focus on improving the quality of the diet by returning to nutrient-dense, traditional patterns. Including adequate portions of dal, whole legumes, beans, non-starchy vegetables, curd, nuts and seeds, while moderating refined carbohydrates, trans fats and added sugars, can make everyday meals more balanced.

Being vegetarian is a dietary choice, but preventing diabetes requires a more thoughtful approach to what we eat, how much we eat and how consistently we maintain a healthy lifestyle. Plant-based nutrition remains powerful, but only when it is balanced for metabolic health.

By Dr Hiran S. Reddy, Consultant Physician, Diabetologist & Critical Care Specialist, Gleneagles Hospital, Lakdi-Ka-Pul, Hyderabad