Your body hosts trillions of bacteria, viruses, and fungi, collectively known as the microbiome. While some bacteria are linked to disease, many play essential roles in supporting your immune system, heart health, weight management, and overall well-being. This article delves into the significance of the gut microbiome and its impact on health.

What Is Gut Microbiome?

Interestingly, bacterial cells outnumber human cells in the body, with approximately 40 trillion bacterial cells compared to 30 trillion human cells. With up to 1,000 species of bacteria present in the gut, each plays a distinct role. While most bacteria contribute positively to health, some can be harmful. Together, these microbes weigh around 1–2 kilograms, functioning almost like an additional organ essential for overall well-being.

How Does Gut Microbiome Influence Your Health?

The relationship between humans and microbes has evolved over millions of years, with the gut microbiome playing a crucial role from birth. Initial exposure to microbes occurs during birth, and some evidence suggests that exposure begins in the womb. As the microbiome diversifies, it starts influencing key bodily functions:

Digestion of breast milk: Beneficial bacteria like Bifidobacteria help break down essential sugars in breast milk, supporting infant growth.

Fiber digestion: Some bacteria process fiber into short-chain fatty acids, which contribute to gut health and reduce risks of obesity, diabetes, and heart disease.

Immune system regulation: The gut microbiome interacts with immune cells, influencing how the body responds to infections.

Brain health: Emerging research suggests a link between the gut microbiome and brain function, potentially affecting mental health and neurological processes.

Gut Microbiome And Weight Management

An imbalance between beneficial and harmful microbes, known as gut dysbiosis, may contribute to weight gain. Studies on identical twins—one with obesity and the other without—suggest that microbiome composition plays a role in body weight independent of genetics. Additionally, animal studies indicate that gut bacteria can influence weight gain, even when calorie intake remains constant.

Probiotics, beneficial bacteria found in supplements and certain foods, can help restore gut balance and support weight loss, though their effects may be modest.

Gut Health And Disease Prevention

The gut microbiome plays a vital role in preventing and managing conditions like irritable bowel syndrome (IBS) and inflammatory bowel disease (IBD). Imbalances in gut bacteria may lead to bloating, cramps, and digestive issues. On the other hand, beneficial bacteria like Bifidobacteria and Lactobacilli help strengthen the intestinal lining, reducing the risk of gut-related disorders.

Impact On Heart Health

Research suggests that the gut microbiome influences heart health by affecting cholesterol levels and blood pressure. Certain harmful bacteria produce trimethylamine N-oxide (TMAO), a compound linked to blocked arteries and heart disease. However, probiotics, particularly those containing Lactobacilli, may help reduce cholesterol levels and promote cardiovascular health.

Blood Sugar Regulation And Diabetes Risk

The gut microbiome also plays a role in regulating blood sugar levels. Research on infants genetically predisposed to type 1 diabetes indicates that gut microbiome diversity declines before disease onset. Furthermore, individual variations in gut bacteria may explain why people experience different blood sugar responses to the same foods.

Connection Between Gut And Brain

The gut is physically connected to the brain through nerves, and certain bacteria help produce neurotransmitters like serotonin, which influence mood and mental health. Studies indicate that people with mental health disorders often have different gut bacteria compared to those without such conditions. Additionally, some probiotics have shown promise in alleviating symptoms of depression and anxiety.

Tips For Healthier Gut Microbiome

Maintaining a balanced gut microbiome is crucial for overall health. Here are some strategies to support gut health:

• Eat a diverse range of foods: A varied diet rich in fiber, legumes, and fruits promotes microbial diversity.
• Consume fermented foods: Yogurt, kefir, and sauerkraut contain probiotics that enhance gut health.
• Limit artificial sweeteners: Some artificial sweeteners can encourage the growth of harmful bacteria.
• Include prebiotic foods: Bananas, oats, and asparagus contain fibers that nourish beneficial bacteria.
• Breastfeed infants when possible: Breastfeeding promotes a healthier gut microbiome in babies.
• Choose whole grains: Whole grains contain fiber and beneficial compounds that support digestive health.
• Opt for a plant-based diet: Vegetarian diets may reduce inflammation and support a healthier gut microbiome.
• Consume polyphenol-rich foods: Green tea, dark chocolate, and olive oil contain compounds that foster beneficial bacteria.
• Take probiotics if needed: Probiotic supplements can help restore gut balance after disruptions, such as antibiotic use.
• Use antibiotics cautiously: While antibiotics can be life-saving, overuse can harm beneficial gut bacteria.

Holding urine occasionally, such as during a long meeting or traffic jam, is generally not harmful for most healthy adults. However, repeatedly delaying urination for extended periods may affect urinary health, particularly in people who are prone to urinary tract infections (UTIs) or have existing bladder problems.

What Happens When You Hold Urine for Too Long?

When urine remains in the bladder for too long, it can become uncomfortable and may contribute to bladder overdistension. In some individuals, particularly those with underlying urinary retention or bladder dysfunction, regularly postponing urination may worsen existing problems.

While holding urine does not directly cause a UTI in every case, incomplete bladder emptying can increase the risk of infection.

Also read: Are People With CKD At Higher Risk Of Dementia And Cognitive Problems?

Why You Should Not Reduce Water Intake to Avoid Bathroom Break

People who work long hours or commute frequently should try to respond to the urge to urinate rather than routinely suppressing it.

Maintaining adequate hydration is equally important, as deliberately drinking less water to avoid bathroom breaks can lead to concentrated urine and may increase the risk of certain urinary problems like concentrated urine leading to crystallization and stone formation.

When Should You Seek Medical Advice?

If you experience persistent urgency, burning during urination, lower abdominal discomfort, difficulty passing urine or blood in the urine, seek medical advice. Developing regular bathroom habits and ensuring convenient access to washrooms can help support long-term urinary health.

It is also important to recognise when urinary symptoms may indicate a more serious problem. Inability to pass urine despite a strong urge, particularly when accompanied by severe lower abdominal pain or swelling, requires urgent medical attention.

Fever, chills or pain in the back or side alongside urinary symptoms may indicate a kidney infection and should be assessed promptly. Avoid assuming that such symptoms are simply the result of holding urine for too long.

By Dr. Vikram Kalra, Principal Director - Nephrology and Kidney Transplant, Aakash Healthcare Multi Speciality Hospital, Dwarka

Menopause brings several changes to a woman’s body, and the breasts are no exception. As levels of oestrogen and other hormones decline, the glandular tissue in the breasts gradually decreases and is replaced by fatty tissue. This can change how the breasts look and feel.

For many women, breasts may become softer, less firm or change slightly in size and shape after menopause. Loss of skin elasticity with age can also contribute to changes in breast shape.

These changes can be a normal part of aging. But not every breast change after menopause should be attributed to hormones.

What breast changes can happen after menopause?

The hormonal changes associated with menopause can alter the composition of breast tissue. Some women may notice that their breasts feel softer or less dense than they did before menopause. Changes in skin elasticity can also lead to sagging or a gradual change in breast shape.

These changes, by themselves, are generally not a cause for alarm.

The concern arises when a new, unusual or persistent change appears, particularly if it is different from what a woman has experienced before.

Also read: Could A Daily Pill Help Prevent Breast Cancer Recurrence? Roche's Promising Experimental Drug Awaits FDA Approval

Which breast changes should not be ignored?

After menopause, women should speak to a doctor if they notice:

• A new change in the size or shape of one breast
• A new lump or area of thickening in the breast
• Persistent swelling in the breast
• Dimpling, puckering or thickening of the breast skin
• A newly inverted or retracted nipple
• Unusual nipple discharge, particularly if it contains blood
• A change in the appearance of the nipple or areola
• A new lump or swelling in the armpit or near the collarbone

These signs do not necessarily mean that cancer is present. Several benign breast conditions can cause similar changes. However, they should not be self-diagnosed or automatically dismissed as a consequence of menopause.

What about breast pain?

Breast pain is commonly caused by benign conditions and, before menopause, may also be associated with hormonal fluctuations. After menopause, persistent or unexplained breast pain should nevertheless be discussed with a doctor, particularly if it occurs alongside another breast change.

It is also important to remember that the absence of pain does not rule out breast cancer. Many breast cancers do not cause pain, and some may not produce a lump that can be felt.

This is one reason women should not wait for pain or a clearly palpable lump before seeking medical advice when they notice something unusual.

Is breast cancer screening necessary after menopause?

Screening remains an important part of breast health after menopause, but the appropriate approach depends on factors such as age, family history, personal medical history and individual risk.

Women should discuss screening with their healthcare provider and follow recommendations appropriate to their age and risk profile. Every woman should also learn how to perform a self-breast examination and become familiar with the normal look and feel of her breasts. Regular self-examination can help women notice new or unusual changes early and seek medical advice promptly.

Self-breast examination should complement, rather than replace, recommended screening and clinical evaluation. If a woman notices a new lump, skin change, nipple change or any other unusual finding, she should consult a doctor even if her routine screening is due later.

Those with a strong family history of breast or ovarian cancer, or a known genetic predisposition to breast cancer, may require a different or more intensive screening strategy.

Importantly, screening is intended for women who do not have symptoms. If a woman notices a new breast change, she should not simply wait for her next routine screening appointment; she should discuss the change with a doctor.

Also read: Breast Cancer: Are Women in India Being Diagnosed Too Late?

Don't blame every change on menopause

Menopause is a natural stage of life, but it should not become an explanation for every new symptom.

Most breast changes are not cancerous. However, the only way to determine the cause of a persistent or suspicious change is through appropriate medical evaluation.

Women should become familiar with how their breasts normally look and feel and pay attention to changes that are new or unusual for them.

Breast health does not become less important after menopause. In fact, continuing to pay attention to changes, practising regular self-breast examination and staying up to date with appropriate screening can help detect problems early.

The message is not to fear every change, but to avoid ignoring one simply because menopause has begun. When something feels or looks different, getting it checked is always better than assuming it is “just menopause.”

By Dr. Tapti Sen, Sr. Consultant ,Breast Surgery, RG Stone Urology & Laparoscopy Hospital, Kolkata

Many women notice changes in their breasts, such as localised tenderness, an itchy nipple or a slight pulling of the skin. These changes are often caused by benign conditions, including hormonal changes, irritation or infection.

Breast cancer does not always present as a painless lump, however. It can sometimes appear in less typical ways, and recognising persistent or unexplained changes can help people seek timely assessment.

India’s breast cancer burden

GLOBOCAN 2022 estimates recorded 192,020 new breast cancer cases and 98,337 deaths in India in 2022. These estimates placed India third globally for the number of new cases and first for the absolute number of deaths. These are estimates for 2022, not current annual counts.

Changes in skin, shape and nipple

A tumour can involve the breast’s supporting fibrous structures and surrounding tissues, causing skin tethering, dimpling or a new change in breast shape or symmetry. Any new, unexplained change deserves clinical assessment.

Changes in the nipple also deserve attention. A nipple that newly flattens, turns inward or deviates to one side should be assessed. Spontaneous discharge from one nipple—particularly bloody or clear discharge—can be a warning sign, although it is not always caused by cancer. Persistent itching, burning, flaking or eczema-like crusting of the nipple may be associated with Paget’s disease of the breast, a rare malignancy involving the nipple–areola complex that is often associated with an underlying breast carcinoma.

Unexplained swelling or persistent lumps in the armpit or above the collarbone can sometimes be an early sign of breast cancer. These findings also have non-cancerous causes and need assessment rather than self-diagnosis.

Also read: Why Peak Incidence For Breast Cancer In India Occurs Between Ages 40–50, Compared To 60–70 In The US & Europe

Pain, redness and swelling

Breast cancer can be painful, even though pain alone is not a reliable way to tell whether a change is cancerous. A painful lump should not be ignored, and a painless lump should not be assumed to be harmless.

Inflammatory breast cancer can be particularly difficult to recognise. It may cause rapid breast enlargement, heaviness, redness, warmth and swelling, sometimes without a distinct lump. The skin may develop a pitted appearance resembling orange peel. Because these symptoms can resemble mastitis or other skin conditions, infection may initially be suspected. However, persistent or worsening redness and swelling, especially when symptoms do not improve as expected with treatment, require prompt reassessment and investigation for an underlying malignancy.

How the diagnosis is confirmed

Any persistent or suspicious breast change warrants clinical assessment. Depending on the person’s age and symptoms, evaluation may include diagnostic mammography and targeted ultrasound. Further imaging or biopsy may be needed when indicated. A suspicious finding should not be dismissed solely because initial imaging is reassuring.

Persistent or suspicious nipple and skin changes require timely specialist assessment. If Paget’s disease or another malignancy is suspected, biopsy may be necessary without a trial of topical treatment. Suspected inflammatory breast cancer requires prompt imaging and tissue diagnosis; a skin punch biopsy may also be indicated.

Also read: Breast Cancer in Young Women: What You Should Know

Common causes of delay

People may delay seeking help because they expect a symptom to become painful, hope it will go away, or assume that redness or itching is due to irritation. Breast symptoms other than a lump can also be associated with longer diagnostic journeys. The length of delay varies between individuals and healthcare settings, so precise comparisons should be interpreted in the context of the study and the interval it measures.

Repeatedly treating persistent skin redness or nipple crusting with antibiotics, moisturisers or steroid ointments without reassessment can delay appropriate investigation. Treatment may be reasonable when infection or a skin condition is suspected, but symptoms that persist, recur or worsen need further evaluation.

When to seek medical advice

A new breast lump, unexplained skin dimpling, new nipple inversion, spontaneous bloody discharge, or persistent redness and swelling warrants prompt medical assessment. Unexplained fullness or swelling in the armpit or above the collarbone should also be checked. Most breast changes are benign, but symptoms should not be ignored or self-treated indefinitely. A healthcare professional can decide whether imaging, biopsy or other investigations are needed.

Early assessment can improve the chance of diagnosing breast cancer at a treatable stage. In general, breast cancer diagnosed while localised has a better prognosis than disease that has spread to distant parts of the body, although outcomes also depend on tumour biology, treatment, and other clinical factors.

By Dr. Arun Kumar Sharma, Consultant, Surgical Oncology, Fortis Hospital Jalandhar