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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.
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.
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.
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.
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.
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.
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.
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.
Maintaining a balanced gut microbiome is crucial for overall health. Here are some strategies to support gut health:
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Disney star Debby Ryan has opened up about living with a “life-altering” brain injury that left her with “hellish” migraines.
Appearing on a web series, the 33-year-old Ryan said she has also suffered five concussions and revealed the “fringe science treatment” that helped her recover.
“The brain injuries make things significantly worse,” the Disney Channel alum said.
“I had a pretty crazy life-altering brain injury a few years ago, and I was out of commission for, like, six months. And I went to this neurological rehab,” Ryan shared. “[I] went and did this fringe science treatment that was, like, really sci-fi and crazy. … That kind of got me back online, but there were some things that just did not come back.”
According to Ryan, her first four concussions stemmed from blunt-force injuries, while her most recent concussion was caused by “sustained shaking over, like, a minute of time.”
Ryan said her life changed significantly after the injury. “There’s sort of pre-incident Debby and post-incident Debby,” she said.
She said that because of her migraines and brain injuries, she sometimes thinks better with her eyes closed, as the world can feel too bright and loud.
“Quite often the world is really loud. It’s really too bright, it’s too — there’s a lot going on,” she explained. “The visual data that I’m taking in can be so distracting.”
Ryan said she feels “very fortunate” that her “amazing” support system helped her deal with the aftermath of her latest concussion.
“[They] reminded me who I am and was and also held a lot of space for that to change — potentially permanently — and love me through that,” she said.
Ryan acknowledged that it must also have been difficult for her loved ones to process the changes.
Cleveland Clinic explains that a traumatic brain injury (TBI) occurs when a sudden external force injures the brain. TBIs can range from mild to severe and may affect thinking, movement, memory, behavior and emotions.
Symptoms can include headaches, confusion, memory problems and mood or behavioral changes. Some people can also experience longer-term problems that affect their daily lives.
Types Of Traumatic Brain Injuries
There are two broad types of TBI:
According to the American Headache Society, post-traumatic headache is one of the most debilitating symptoms following a concussion.
Post-traumatic headache typically develops within seven days of a concussion or regaining consciousness after the injury. It can present in different ways but often resembles migraine in its symptoms and duration.
In some cases, these headaches can become persistent or chronic.
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For years, doctors believed that menopause was the big trigger for heart-related changes in women. Turns out, that might not be the full story.
A new study, published in the journal Hypertension, found that something called pulse pressure starts rising in women as early as their late 30s. That's way earlier than the time most women hit menopause.
Pulse pressure is just the gap between the two numbers you see in a blood pressure reading. The top one and the bottom one. As we age, this gap tends to widen. And when it widens too much, it's usually a sign that the aorta, the body's biggest blood vessel, is getting stiffer.
A stiffer aorta means your heart has to work harder to pump blood around your body. Over time, that extra strain adds up.
Researchers looked at data from more than 9,500 people, over 6,500 women and around 3,000 men, all part of the Framingham Heart Study. This is one of the longest-running heart health studies in the world, and the participants were tracked across three health checkups over 14 years.
What they found was interesting. Pulse pressure hits its lowest point and then starts climbing about ten years earlier in women than in men. For women, this shift happens in the late 30s. For men, it's usually the late 40s. And by the time women reach around 60, their pulse pressure is consistently higher than men's.
This pattern showed up even when a woman went through menopause. Early, late, right on time, didn't matter. The rise in pulse pressure followed the same timeline regardless.
Gary F Mitchell, one of the researchers on the Framingham Heart Study, said the team was genuinely caught off guard by this. Menopause timing, it seems, wasn't the main thing driving the change; something else was clearly at play too.
"To our huge surprise, our results suggest that factors other than the timing of the final menstrual period were likely involved in the accelerated increase in pulse pressure in women after midlife," he noted.
Elevated pulse pressure isn't just a random number on a report. It's linked to a higher risk of heart disease, dementia, and even kidney disease. It can also make managing high blood pressure trickier, since some medications don't work as well once arteries get stiffer.
The bigger takeaway from this study is pretty simple. Women's heart health might need attention way earlier than we've been taught to think. Instead of waiting until menopause to start paying attention to cardiovascular health, doctors might need to start the conversation years earlier, around the late 30s.
So, if you're a woman in your 30s reading this, this isn't meant to scare you. It's just a reminder that heart health isn't something to put off until your 40s or 50s. A basic check on your pulse pressure now might tell you more than you'd expect.
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Urine leakage when you cough, sneeze or exercise is often dismissed as something women simply have to live with after pregnancy or childbirth. But pelvic floor problems can affect both women and men and may interfere with daily activities, confidence, relationships and sexual health.
Many people quietly live with symptoms such as urine leakage, urgency, pelvic pressure or pain, while even those who seek medical help may not know the underlying cause. Speaking to HealthandMe, doctors said these can be signs of pelvic floor dysfunction — a treatable condition that should not be ignored.
Early identification and appropriate treatment can help prevent symptoms from disrupting everyday life.
Pelvic floor dysfunction occurs when the muscles in the pelvis do not relax, contract or coordinate properly. These muscles support the bladder, bowel and reproductive organs.
According to the Cleveland Clinic, the pelvic floor muscles act like a supportive hammock. When they are too tight, weak or poorly coordinated, normal bladder, bowel and sexual functions can be affected.
Pregnancy and childbirth are important risk factors, but pelvic floor problems can also affect men. Symptoms may include urinary urgency or leakage, pelvic pain or pressure and bowel problems.
Other factors such as sedentary lifestyles, stress, obesity and constipation may be contributing to pelvic floor dysfunction.
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Dr Nirmala M, Consultant, Obstetrician, Gynaecologist & Fertility Specialist, Motherhood Hospitals, Bengaluru, told HealthandMe that sedentary office work, stress, obesity and constipation can contribute to pelvic floor problems. Poor water intake and regularly holding urine can also play a role.
“It is seen that almost four of every five cases of incontinence observed in hospitals have been identified among young women aged 25 to 35 years old,” she said.
Pelvic floor dysfunction can affect men too, particularly in association with urinary, bowel or prostate-related problems.
Dr Meghana Reddy Jetty, Senior Consultant - Obstetrics, Gynecology, Laparoscopy and Aesthetic Gynecology, Aster Women and Children, Bengaluru, said men may also experience urinary leakage and bowel control problems, including in association with pelvic operations and prostatic procedures.
“Men have pelvic floor muscles too, which are responsible for bladder and bowel control and proper functioning of the pelvis,” she said.
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Symptoms can vary depending on whether the pelvic floor muscles are weak, too tight or poorly coordinated.
Common signs include:
Dr Nirmala said urinary leakage during physical strain and a sudden, uncontrollable urge to urinate are among the early symptoms.
Dr Meghana said occasional urine leakage, difficulty emptying the bladder or bowel, pelvic heaviness, discomfort and pain during sexual intercourse can indicate that the pelvic floor is not functioning properly.
The condition can affect more than bladder or bowel control. Fear of leakage, urgency or pain may cause people to avoid exercise, travel and social activities.
Dr Nirmala said some women avoid parties and long-distance travel because of difficulty finding a nearby bathroom. In serious cases, they may rely on diapers or sanitary pads, affecting confidence and increasing stress.
Pelvic floor dysfunction can also affect sexual health. Pain and difficulty relaxing the pelvic muscles may lead women to avoid sexual activity.
“It can hurt sexual health if pain and difficulty in relaxing pelvic muscles cause one to avoid sexual activity. This kind of problem that seemingly just involves the physical aspect can slowly but surely have a great effect on one's confidence, relationships and behavior in general,” said Dr Meghana.
Exercise can support pelvic health, but the type, intensity and technique matter.
Dr Swati Rai, Senior Consultant-Obstetrician and Gynecologist at Cloudnine Group of Hospitals, Noida, said exercises such as Kegels, diaphragmatic breathing, pelvic tilts, glute bridges and gentle core strengthening can help support the pelvic floor during and after pregnancy, depending on the individual.
“Kegels involve gently contracting the muscles used to control urine, holding briefly and then completely relaxing; they should not be routinely practized while urinating,” she told HealthandMe.
However, excessive or improperly performed high-impact exercise, intense interval training, repeated jumping and weightlifting can place additional pressure on the pelvic floor, particularly when breathing and core control are inadequate.
Dr Meghana said pelvic-floor training should focus on muscle control rather than simply increasing repetitions.
“So, training of pelvic muscles should be more about learning muscle control - knowing when to contract and when to relax - rather than just doing more and more repetitions,” she said.
Dr Swati said excessive straining, breath-holding or incorrectly performed high-impact exercises may aggravate symptoms.
Pelvic floor dysfunction can improve significantly with appropriate, personalized treatment. However, treatment depends on whether the muscles are weak, overly tight or poorly coordinated.
Treatment may include:
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