We have all seen movies where right before the hero starts fighting, he cracks his knuckles and makes it look like the coolest thing in the world! But then our parents told us that you should not crack your knuckles because that weakens your grip and hand strength. But is that true? While many people do say that they experience a small loss in strength immediately after they crack their knuckles, but are their long-term effects to it? And what is the sound actually coming from?

The reason why people crack their fingers is because the evident and sharp crack noise causes a sense of relief. Many people also do it when they have done an activity that required them to work with their hands a lot like typing or sewing, giving themselves a sense of satisfaction, similar to stretching after doing hard work. That "crack" sound can make some people cringe, while others find it strangely satisfying. Cracking your knuckles is a pretty common habit, but there are a lot of misunderstandings about it. Some people do it without even thinking, others can't stand the noise, and some can't crack their knuckles at all. You might have been told as a kid that it causes arthritis or makes your fingers swell up. But those are just old wives' tales. There's a real science behind this habit, and it's more interesting than you may think.

Why Do Knuckles Make That Popping Sound?

The "crack" isn't actually bones breaking or anything bad happening to your joints. It's a normal thing called "crepitus." This just means harmless popping, snapping, or grinding sounds that come from your joints. The main reason you hear this sound is because of gas bubbles in the fluid that cushions your joints. This fluid is called synovial fluid. When you move or stretch, these tiny bubbles form and then pop, making the sound. It's totally normal and doesn't hurt you. Sometimes, especially in bigger joints like your knees, shoulders, or ankles, the sound can also happen when the stretchy tissues that connect your bones (ligaments and tendons) move slightly and then snap back into place.

After you crack your knuckles, you can't usually do it again right away. You have to wait a bit. That's because the gas bubbles in your joint fluid have already popped, and it takes a little while for them to build up again. While cracking your knuckles doesn't give you arthritis, doing it too much might cause some problems. Doctors say that cracking them too often could make your joints a little wobbly and might even make your grip weaker. Also, if the stretchy tissues in your joints keep snapping over your bones, they can get irritated and sore.

When Joint Popping Might Mean Something More

Sometimes, a pop in your joint is just like cracking your knuckles, nothing to worry about. But other times, it can be a sign of something else. As we get older, the cushiony stuff in our joints, called cartilage, can start to wear down. This cartilage helps your bones move smoothly. When it gets thin or uneven, the bones can rub together, and that can make a grinding or popping sound. This is different from the pop you get from gas bubbles. If this grinding sound happens along with pain, it could be a sign of osteoarthritis. This is a type of joint problem that's more common in older people, but younger people can get it too, especially after a joint injury. If your joints hurt, especially in the morning or after you've been sitting still for a while, feel wobbly, or are hard to move, it's a good idea to see a doctor.

By the time we enter our 40s, the lungs begin to undergo gradual changes that can affect breathing capacity and respiratory reserve. While some changes are a normal part of ageing, persistent cough, breathlessness or recurrent chest infections should not simply be dismissed as getting older.

Experts explain why lung health deserves greater attention after 40, which everyday habits can help protect the lungs, and when screening or medical evaluation may be needed.

As we enter our 40s, what natural changes occur in our lungs, and why does lung health become more important at this stage of life?

As we age lung tissue elasticity declines and chest wall mechanics stiffen. From an oncology standpoint, age-related cellular damage and long-term exposure to cancer causing agents like tobacco increase cancer risk. Looking after lung health from young age builds the respiratory reserve needed to tolerate advanced medical or surgical interventions if required as you get older.

What everyday lifestyle habits can help keep our lungs healthy after 40?

Engage in regular aerobic conditioning exercises to maintain full breathing capacity. Reduce carcinogen exposure by avoiding active and passive tobacco smoke, and ensuring proper ventilation while cooking. using HEPA air purifiers may help to an extent. Maintain an antioxidant-rich diet to combat cellular oxidative stress.

Also read: Dream Of Becoming A Footballer Or Cricketer? Cardiologists Reveal Heart-Healthy Habits For Young Athletes

What are some early signs of declining lung health that people often dismiss as 'just ageing' but should actually get checked?

2 to 3 week cut off is applicable here. A persistent cough lasting over three weeks, progressive exertional breathlessness, recurrent chest infections, coughing up blood, or unexplained weight loss are red flags. This is for both smokers and nonsmokers. Early-stage lung cancers are frequently asymptomatic or subtle; ignoring these signs delays diagnosis. These symptoms are that of TB as well. So, that should be ruled out.

Are there any health screenings, vaccinations, or routine check-ups that adults over 40 should consider to protect their lung health?

Annual flu and once in lifetime pneumococcal vaccine prevents severe pulmonary infections. For high-risk individuals—such as heavy past or present smokers—a annual Low-Dose CT (LDCT) scan is the gold standard for early lung cancer detection, finding lesions when they are most curable. Eliminating tobacco, mitigating indoor air pollution, exercising, and maintaining balanced nutrition significantly lower cancer risk and improve overall survival outcomes.

By Dr. Sandeep Nayak, Chairman of Oncology, MACS-Renova Oncology Institute, KIMS Hospital, Bangaluru

A blood test is considered the first step towards fertility enquiries, but for many, the results might seem like a confusing jumble of numbers and acronyms. Reports sometimes contain terms like AMH, FSH, LH, AFC, and estradiol, which makes patients confused if a single "abnormal" figure indicates they are unable to conceive.

The truth is more reassuring, and more nuanced. Fertility experts stress that a person's fertility cannot be ascertained by a single test. Instead, these markers serve as parts of a bigger picture, assisting fertility specialists in comprehending reproductive health and suggesting the best course of action when necessary.

Fertility Tests Are Guides, Not Verdicts

The idea that a single blood test can determine whether a woman would naturally become pregnant is one of the most widespread myths. Age, egg quality, ovulation, sperm health, uterine health, lifestyle, and underlying medical issues are some of the factors that actually affect fertility.

Although diagnostic markers offer useful information, they must always be interpreted in conjunction with the couple's overall reproductive profile, clinical history, and ultrasound results.

Also read: How Menopause Changes Heart Health Risks?

Understanding The Ovarian Reserve “AMH”

Many women with low AMH can still achieve successful pregnancies, especially if they continue to ovulate regularly. Similarly, women with high AMH are not necessarily more fertile, elevated AMH levels in women also means Polycystic Ovary Syndrome (PCOS), where ovulation may actually be irregular. For fertility specialists, AMH is useful in predicting the number of eggs that are likely to respond to ovarian stimulation medication, based on which they customize IVF treatment.

Also read: Making IVF Affordable: Experts Push For Insurance Cover, Public Funding & Better Access To Fertility Care In India

FSH Determines Ovarian Function

Our pituitary gland produces Follicle Stimulating Hormone (FSH) and this hormone helps in stimulating egg development.

Usually, the second or third day of the menstrual cycle is when FSH is measured. If ovarian reserve is reduced, that is higher-than-normal levels, which may imply that ovaries need more stimulation to mature eggs. From cycle to cycle the FSH levels change.

Also read: NCR's Long Commutes Are Stealing Sleep & Affecting Reproductive Health

LH And The Ovulation Story

FSH and luteinizing hormone (LH) cooperate to control ovulation. The ovary releases a developed egg in response to an increase in LH.

LH levels may be disproportionately greater than FSH in PCOS-affected individuals, which can lead to irregular menstrual periods and ovulation. Instead of using LH alone, fertility specialists assess it in link with other hormone markers.

Also read: World Embryologist Day: What Really Happens Inside An IVF Lab?

Estradiol And AFC: Completing The Picture

An indicator of ovarian activity during the menstrual cycle is estradiol (E2), a type of estrogen generated by growing follicles. Combined interpretation is crucial since elevated early-cycle estradiol levels can occasionally conceal an elevated FSH.

The Antral Follicle Count (AFC), which is done via a transvaginal ultrasound, is another crucial evaluation. AFC gives an additional indication of ovarian reserve by counting the number of visible tiny follicles in the ovaries.

Indeed, the combination of AMH and AFC provides a more thorough insight than any test by itself.

Also read: World IVF Day: Why Men Need To Be Part Of The Fertility Conversation

Fertility Evaluation Isn't Just For Women

Female hormone testing frequently receives greater attention, whereas male fertility contributes to roughly half of all infertility issues.

A semen screening remains one of the most significant and cost-effective tests, measuring sperm count, mobility, and morphology. When necessary, additional hormonal or genetic tests might be suggested.

Era Of Self-Diagnose

After getting a test report, many people search the web for quick answers, but those disguised numbers without proper medical context from a specialist can erupt unnecessary tension.

The fertility markers depend on a variety of factors, some of which include: age, weight, menstrual history, prior pregnancies, medications, hormonal status, and lifestyle.

Therefore, understanding the parameters like “low” or “high” online may create chaos within the individuals. Instead, consult a fertility specialist to decode the report.

By Dr Rubeena Zainab, Senior Consultant - Reproductive Medicine, Milann Fertility and Birthing Hospital, Bengaluru

Period hygiene is something that girls today are more aware of. This is because they have access to a lot of information from schools, doctors, social media and public health campaigns.

People are now more open to talking about periods than they were a years ago. Knowing about period hygiene does not always mean that girls are doing things the right way.

A lot of girls are still not sure how often they should change their sanitary pads or how to keep themselves clean. They also do not know which menstrual product is best for them.

Educating Young Girls About Menstruation

This is where parents can help. They should start teaching girls about menstruation before they get their period. This way girls will know that getting their period is not something to be scared of.

Parents should tell girls to change their sanitary pads every hour even if they are not completely soaked. They should also teach girls to wash themselves with clean water. Using soaps or fragrances is not necessary and can be bad for the skin.

When it is raining and the air is damp girls should keep themselves dry by patting themselves after washing. Wearing cotton underwear that can absorb moisture is also a good idea. This can help prevent infections.

Parents should also talk to girls about how to use menstrual products safely. Whether a girl uses sanitary pads, tampons, menstrual cups or period underwear she should know how to use them clean them and replace them correctly. If girls do not use these products the way they can get infections or feel uncomfortable.

Also read: Bryan Johnson's New 2.6M Women's Health Project Centers on Girlfriend's Menstrual Blood

Menstrual Products

There are different menstrual products available today. This is a thing because girls can choose the products that are best for them. Having so many options can also be confusing especially for teenagers.

Instead of saying that one product is better than another we should focus on making sure girls have all the information they need to make good choices.

All menstrual products are safe if used correctly. Girls should feel like they can try products ask for help when they need it and choose the products that make them feel good, about themselves.

By Dr Nishita Shah, Gynaecologist, Saifee Hospital