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Dr. Aravinda Jawali

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MD-PhD, FIPS, Fellow of Academy of General Education (FAGE), DPM, MBBS

Psychiatrist, Ludhiana

43 Years Experience  ·  5000 at clinic  ·  ₹500 online
Dr. Aravinda Jawali 91% (1377 ratings) MD-PhD, FIPS, Fellow of Academy of General Education (FAG... Psychiatrist, Ludhiana
43 Years Experience  ·  5000 at clinic  ·  ₹500 online
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MD-PhD - IDEE Belgium & ISN - 1986
FIPS - IPS - 1981
Fellow of Academy of General Education (FAGE) - MANIPAL - 1978
MBBS - KMC Hubli - 1975
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I am 27 year old guy. How to increase sex power for long time during intercourse. Is there any medicine. please suggest. your advice is valuable for me. Thank you.

MD-PhD, FIPS, Fellow of Academy of General Education (FAGE), DPM, MBBS
Psychiatrist, Ludhiana
I am 27 year old guy. How to increase sex power for long time during intercourse. Is there any medicine. please sugge...
Increasing sex power is mainly by increasing your muscle power. Try to be physically fit. Medicines are not advisible.
1 person found this helpful
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My wife have no good interest of sex so what I do for that? And when I do the sex ,very few minute my sex I is over ,tell me what is the solution?

MD-PhD, FIPS, Fellow of Academy of General Education (FAGE), DPM, MBBS
Psychiatrist, Ludhiana
My wife have no good interest of sex so what I do for that? And when I do the sex ,very few minute my sex I is over ,...
You spend more time with your sexual partner. Everone will be having instinct. Both have to learn getting triggered for making sex and happy orgasm.
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I have problem of premature ejaculation, penis is curve to left side, penis hardness and when I eject the sperm quantity is very low how to increase.

MD-PhD, FIPS, Fellow of Academy of General Education (FAGE), DPM, MBBS
Psychiatrist, Ludhiana
I have problem of premature ejaculation,
penis is curve to left side, penis hardness and when I eject the sperm quant...
Curvature and extra length has no bearing on females except psychologically. Volume of semen varies 2 to 5 ml more or less for first ejection in 24 hours.
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I am 35 year old and I am suffering from knee pain from last 3 months as per x ray report there is less gap between joints of knee Orthopaedic Dr. suggest me traction to cure Could it cure naturally or without traction treatment?

MD-PhD, FIPS, Fellow of Academy of General Education (FAGE), DPM, MBBS
Psychiatrist, Ludhiana
I am 35 year old and I am suffering from knee pain from last 3 months as per x ray report there is less gap between j...
Try physiotherapy. Massage. And ayurvrdic treatments. Regularly. Take diet. Try also orthopedians advise.
2 people found this helpful
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I lost somebody close last two year so I am very depressive you are request to remove my problem.

MD-PhD, FIPS, Fellow of Academy of General Education (FAGE), DPM, MBBS
Psychiatrist, Ludhiana
I lost somebody close last two year so I am very depressive you are request to remove my problem.
Be informed that you can't get someone you lost. Accept the situation and cherish good memories for your lifetime. It's a bereavement you will have to go through. Cry out your depression.
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MD-PhD, FIPS, Fellow of Academy of General Education (FAGE), DPM, MBBS
Psychiatrist, Ludhiana
Hey, let's switch to ANJIE:

MD-PhD, FIPS, Fellow of Academy of General Education (FAGE), DPM, MBBS
Psychiatrist, Ludhiana

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Melanoma of nail unit
Melanoma of the nail unit is usually a variant of acral lentiginous melanoma (melanoma arising on the palms of the hands and soles of the feet). Other types of melanoma rarely arising under the nails are nodular melanoma and desmoplastic melanoma.
Melanoma of the nail unit usually affects either a thumb nail or great toenail but any finger or toenail may be involved. The term includes:
Subungual melanoma (melanoma originating from the nail matrix)
Ungual melanoma (melanoma originating from under the nail plate)
Periungual melanoma (melanoma originating from the skin beside the nail plate)
Who gets melanoma of nail unit?
Melanoma of the nail unit is rare, accounting for only about 1% melanoma in white-skinned individuals. It arises in people of all races, whatever their skin colour. Although no more common in dark skin than fair skin, it is the most common type of melanoma diagnosed in deeply pigmented individuals. It is most diagnosed between the age of 40 and 70.
It is not thought to be due to sun exposure. Trauma may be a factor, accounting for the greater incidence in the great toe and thumb.
What does melanoma of the nail unit look like?
Subungual melanoma often starts as a pigment band visible the length of the nail plate (melanonychia). Over weeks to months, the pigment band:
Becomes wider, especially at its proximal end (cuticle)
Becomes more irregular in pigmentation including light brown, dark brown
Extends to involve the adjacent nail fold (Hutchinson sign)
May develop a nodule, ulcerate or bleed
May cause thinning, cracking or distortion of the nail plate (nail dystrophy).
However, in up to half of all cases subungual melanoma is amelanotic (not pigmented). Ungual melanoma can form a nodule under the nail plate, lifting it up (onycholysis). It may sometimes look like a wart (verrucous). It is usually painless, but an advanced tumour invading underlying bone may cause severe pain.
Melanoma of nail unit Melanoma of nail unit Melanoma of nail unit
© Dr Ph Abimelec – dermatologue, used by DermNet NZ with permission
Melanoma of the nail unit
More images of melanoma of the nail unit ...
How is the diagnosis of nail unit melanoma made?
Subungual melanoma may be suspected clinically because of a wide (>3mm) new or changing pigment band in a single nail. Dermoscopic examination may reveal more details showing pigmented lines of varying colour, width and spacing. These lines tend to lose their usual tendency to run parallel to each other along the length of the nail. Ungual melanoma forms a non-pigmented lump under the nail plate, eventually resulting in its destruction.
The diagnosis of melanoma is confirmed by biopsy of the nail matrix and nail bed. It can be a difficult diagnosis requiring examination by expert dermatopathologists. The pathologist should report whether the melanoma is in-situ or invasive. The description of invasive melanoma should include its thickness in millimetres and what level of tissue has been invaded.
If the clinical diagnosis is subungual haematoma (a purple mark under the nail due to bleeding or bruising), the nail may be observed for a few weeks. Normal-appearing nail should then be seen growing behind the mark. Dermoscopy is helpful, as haematoma does not conform to the band-like pattern of subungual melanoma. However, it must be remembered that melanoma may bleed.
Other diagnoses that are often considered include onychomycosis (fungal infection), paronychia, pyogenic granuloma and squamous cell carcinoma.
What is the treatment of melanoma of the nail unit?
The melanoma must be removed surgically. This requires removal of the entire nail apparatus. Sometimes the end of the finger or toe is amputated.
Some patients may be offered sentinel node biopsy to determine whether the melanoma has spread to local lymph nodes.
What is the outlook for patients with melanoma affecting the nail unit?
The main factor associated with risk of spread of melanoma (metastasis) and death is the thickness of the melanoma at the time of complete excision of the primary tumour. Delay in diagnosis is common with subungual melanoma, particularly when it affects the toe, and some of these tumours have already spread at the time of diagnosis.
The 5-year survival rate ranges widely from 16% to 87%, depending on the series, with 2 larger series in the 51% to 55% range2.
Related information
Chamberlain A. Ng J. Cutaneous melanoma – Atypical variants and presentations. Aust Fam Physician. 2009 Jul;38(7):476-82.
Ruben BS. Pigmented Lesions of the Nail Unit: Clinical and Histopathologic Features. Seminars in Cutaneous Medicine and Surgery 2010;29(3):148-158
On DermNet NZ NZNZ:
Acral lentiginous melanoma
Superficial spreading melanoma
Lentigo maligna
Nodular melanoma
Desmoplastic melanoma
Ocular melanoma
Metastatic melanoma
Skin cancer
Other websites:
Melanome – Dr Ph Abimelec website (French)
Books about skin diseases:
See the DermNet NZ bookstore
Author: Dr Amanda Oakley, Dermatologist, Hamilton NZ.
Created 2011. Last modified 23 May 2014. © 2015 DermNet New Zealand Trust. You may copy for personal use only. Please refer to our disclaimer and copyright policy.
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MD-PhD, FIPS, Fellow of Academy of General Education (FAGE), DPM, MBBS
Psychiatrist, Ludhiana


Christophe Haubursin
I read more than 50 scientific studies about yoga. Here's what I learned.
by Julia Belluz on July 22, 2015

Sometimes I wonder if the two can go together. I cringe whenever an instructor claims I'm "wringing the toxins" out of my organs with a twisting pose, for instance. Still, after eight years, I keep going back. Post-yoga, I feel calmer and more aware of my body, and this seeps into everything I do: how I work and relate to others, how I eat and sleep.

The bottom line
What we know:

Yoga is probably just as good for your health as many other forms of exercise. But it seems particularly promising for improving lower back pain and — crucially — reducing inflammation in the body, which can actually help stave off disease. Yoga also seems to enhance "body awareness," or people's sense of what's going on inside themselves.

What we don't know:

Whether some forms of yoga are better than others, whether yoga should be prescribed to people for various health conditions, and how yoga compares with other forms of exercise for a good many specific health outcomes. There's also no good evidence behind many of the supposed health benefits of yoga, like flushing out toxins and stimulating digestion.

What this means for you:

If you like yoga, keep doing it. There's no evidence that it's particularly harmful, and it can lead to a range of heath benefits. Depending on your goal, it's important to find an appropriate style — from athletic ashtanga to gentle hatha. If you don't like yoga, no sweat: Just try another physical activity.

Welcome to Show Me the Evidence, where we go beyond the frenzy of daily headlines to take a deeper look at the state of science around the most pressing health questions of the day.
It's not just me.

The most recent survey suggests more than 20 million Americans practice yoga, making it one of the most popular forms of exercise. Even Vladimir Putin, a devotee of "macho sports," added downward dog to his repertoire.

But is yoga really that great for health compared with other exercises? Does it really help improve our response to stress or correct bad posture, as often promised? Maybe our perceptions about yoga are biased. Or maybe, as some critics have pointed out, there are downsides to yoga. Who can forget the controversial New York Times story from 2012 suggesting that some people get seriously injured, or even die, on their yoga mats.

I wanted a more objective view on the health effects of yoga, so I turned to science, reading more than 50 studies and review articles and talking to seven of the world's leading yoga researchers. Almost immediately, I was struck by how weak the research on yoga is. Most studies were small and badly designed or plagued by self-selection bias. Making matters worse, there are so many varying styles of yoga that it's tough to say how meaningful evidence about one style is for others.

Still, what I learned is that there are a few things we can say about yoga, based on the available research. Yoga probably won't hurt you, despite what haters claim, and it appears to be just as good for your health as other similar forms of exercise.

Even more, yoga seems to help alleviate lower back pain, improve strength and flexibility, and reduce inflammation in the body — which, in turn, can help stave off chronic disease and death. Emerging research suggests yoga can increase body awareness, or attention to the sensations and things going on inside you. That's no small matter: Researchers think heightened body awareness can improve how well people take care of themselves.

Keep in mind, however, that other mind-body exercises — such as tai chi or meditation — can boost body awareness and reduce inflammation, too. That's the catch with a lot of yoga research: It still hasn't told us how much better or different yoga is for a number of health measures when compared with other forms of exercise. Finally, many of the most outlandish claims people make about yoga, like the idea that it can alleviate constipation or wring out toxins, either aren't backed by science or haven't been studied at all.

What is the state of yoga science?
(ChinaFotoPress/Getty Images)

The first randomized trial (or high-quality experiment) on yoga was published in 1975 in The Lancet. It showed that yoga was more effective than relaxation for reducing high blood pressure. But that trial only involved 34 participants, and all of them already had high blood pressure, so it is difficult to know whether the effect of the yoga would bear out in a larger trial of healthy people.

Since then, the number of yoga studies has dramatically increased, but the field is plagued by some of the same problems of that early study. Many yoga studies still involve small numbers of participants. Many lack a control group. Many don't compare yoga to activities we'd be interested in comparing it to. (Ideally, for instance, we'd want to know how yoga measures against another form of exercise or mind-body practice — not, as one study examined, comparing whether it's better for back pain than giving people a book on how to manage their back pain.)"For most conditions, the main problem is we don't have enough evidence yet"

What studies do exist are often short term. There are no long-term studies on mortality or serious disease incidence. There are few long-term studies on the potential harms yoga can wreak on the body. "For most conditions," says Holger Cramer, director of yoga research at the University of Duisburg-Essen in Essen, Germany, "the main problem is we don't have enough evidence yet."

More from Show Me the Evidence

E-cigarettes and health — here's what the evidence actually says

Studying yoga is also tricky. Researchers generally believe blinded studies are the highest quality of research, because participants involved don't know what intervention (such as a drug) they are receiving and their biases and perceptions don't color the outcomes. But you can't blind people to the fact that they're doing yoga.

Then there's the biggest question at the center of yoga research: How do you define yoga? "Yoga is many things to many people," said Karen Sherman, a researcher affiliated with the Group Health Research Institute. "What you put into a yoga intervention probably impacts what you get out."

Yoga usually involves some combination of the following: postures and poses (asanas), regulated breathing (pranayama), and meditation and relaxation (samyana). But many classes mix in other elements, from chanting to heating to music. There's also a lot of variation in teaching quality and style. Hatha and Iyengar yoga are mostly made up of stretches and restorative poses, while ashtanga and vinyasa tend to be more vigorous and athletic. Yin yoga probably won't make you sweat: You mostly hold postures for long periods of time for very deep stretches. In Bikram, which consists of 26 postures repeated twice in a room that's heated at 105 degrees, you can be sure you'll drench your yoga clothes in perspiration.

(Soloviova Liudmyla/Shutterstock)

Lorenzo Cohen, chief of the integrative medicine section at MD Anderson Cancer Center, told me: "Many papers [on yoga] don't have enough of an in-depth description of what they mean by 'yoga.' What was the level of training of yoga therapists? How did they choose different postures or breathing exercises?"

What's more, there are so many components in a yoga class, it's tough to know what might be having an affect on health: If people report feeling better after a class, was that due to the experience of being part of a larger group? Was it the teacher's style? Was it the breathing exercises? The heat? These factors are difficult to isolate, and some of the ways yoga helps people might be hard for scientists to measure.

Still, the yoga researchers I spoke to said the quality and quantity of studies has been improving, so we may get better answers soon. "There are more researchers conducting yoga therapy studies, and when the smaller trials suggest benefit, that leads to larger, better-designed trials," said Cohen. There is also a move to study the biological outcomes of yoga — how classes affect things like hormone levels — which will lead us to a more objective picture of what yoga can do for the body.

1) Is yoga likely to hurt you?
No, probably not.

This question first came up in 2012, when the New York Times published a splashy article suggesting that yoga can wreck your body. The piece, adapted from the book The Science of Yoga: The Risks and Rewards, suggested yoga caused widespread harm to its practitioners — from ruptured disks and stroke to brain injury.

But that piece was largely based on cherry-picked anecdotes, exaggerating these horrible cases to suggest they were representative of the broader yoga experience when they simply aren't.

(Luna Vandoorne/Shutterstock)

Cramer has studied published reports of injuries and other harms from yoga for several review and told me this: "We found yoga is as safe as any other activity. It's not more dangerous than any other form of exercise." He added: "Yoga is not 100 percent safe, but nothing is 100 percent safe."

In a 2013 review of case studies, Cramer identified 76 unique incidents of adverse events from yoga. "Most adverse events affected the musculoskeletal, nervous, or visual system," he concluded. "More than half of the cases for which clinical outcomes were reported reached full recovery, 1 case did not recover at all, and 1 case died."

Most often, people got into trouble with the headstand pose, followed by shoulder stand and postures that required putting one or both feet behind the head
Most often, people got into trouble with the headstand pose, followed by shoulder stand, postures that required putting one or both feet behind the head, the lotus position, and forceful breathing. Pranayama-, hatha-, and Bikram-style yoga practices had the most adverse events associated with them.

Based on these cases, Cramer and his co-author had this practical advice for how to stay safe in yoga: Beginners should avoid advanced postures (such as headstands), and people with chronic health conditions (such as glaucoma) should consult their doctors before diving in. "Yoga," they added, "should not be practiced while under the influence of psychoactive drugs."

As for long-term yoga harms, Cramer pointed to two studies on joint and cervical disc degeneration in people who have been doing yoga for a while. But the studies had contradictory results, "so long-term health consequences cannot be clearly derived from the available evidence," Cramer said.

I asked MD Anderson's Cohen for his take. "There can, of course, be negative consequences if done incorrectly, like any body manipulation," he said, "but if you have the right teacher this will not happen." Even if a lot of yoga over a lifetime leads to injury, it's not clear those harms outweigh the benefits, or that people would have been better off running or weightlifting all the time.

2) How does yoga compare with other forms of exercise?
(Anna Furman/Shutterstock)

The short answer is: It depends on the type of yoga. Yoga classes that involve nothing more than lying around on piles of blankets and breathing aren't likely to build your muscles. But more strenuous types of yoga like ashtanga can be surprisingly similar to other forms of vigorous exercise.

"Some studies show, depending on yoga style, that it doesn't improve fitness as much as other forms of exercise," Cramer says. "But for rigorous and intense styles [of yoga] — that can be a form of exercise. It strongly depends on what you do when you do yoga."

For example, a few high-quality studies have shown that certain types of yoga can indeed make people stronger. One small, randomized trial in the Journal of Strength and Conditioning Research — which compared eight weeks of Bikram yoga with no intervention in 32 young, healthy, adults — found that the yoga classes improved people's deadlift strength.

The Bikram classes didn't, however, improve the participants' aerobic capacity. Another before-and-after study, published in the Journal of Clinical Nursing, found that hatha yoga could improve aerobic fitness in older people. Still, it's not clear that yoga is ideal here compared with, say, running or swimming.

Considering the mixed findings, a bit of common sense is helpful: If you go to a class mainly focuses on relaxation and doesn't elevate your heart rate, you're probably not getting a good cardio workout or building muscles.

If you go to a more athletic yoga class that tires out your muscles and makes you pant, you can probably count on it helping to make you stronger. If you are panting in a yoga class, you're probably improving aerobic capacity to some extent. That said, if your main goal is building aerobic capacity, you might want to try running or swimming instead of or in addition to yoga.

Key studies:

1975: Lancet — "Randomised controlled trial of yoga and bio feedback in management of hypertension." This is the first-ever randomized trial on yoga, and it found that yoga was more effective than relaxation in reducing high blood pressure.

1985: British Medical Journal — "Yoga for bronchial asthma: a controlled study." This is the first randomized trial on yoga for asthma, and it was one of the first to show the effects of yoga on the inner organs.

1998: JAMA — "Yoga-based intervention for carpal tunnel syndrome." This was a well-regarded randomized trial that showed the benefits of yoga for carpal tunnel syndrome compared with wrist splinting and no intervention.

2005: Annals of Internal Medicine — "Comparing yoga, exercise, and a self-care book for chronic low back pain." This is the most important trial on yoga for lower back pain and the first really high-quality trial on yoga. Based on this trial, yoga had become increasingly recognized as an effective treatment for chronic lower back pain.

2013: Journal of the American College of Cardiology — "Effect of yoga on arrhythmia burden, anxiety, depression, and quality of life in paroxysmal atrial fibrillation." One of the first trials to show that yoga may have an impact on life-threatening diseases such as atrial fibrillation.

2013: Journal of Strength and Conditioning Research — "Bikram Yoga Training and Physical Fitness in Healthy Young Adults." This trial showed Bikram yoga can improve strength and flexibility but not aerobic capacity.

2014: Journal of Clinical Oncology — "Randomized, controlled trial of yoga in women with breast cancer undergoing radiotherapy." This high-quality trial demonstrated yoga can have benefits for women being treated for breast cancer.

2015: Brain, Behavior, and Immunity — "Mind-body therapies and control of inflammatory biology." A review of the evidence on yoga and other mind-body activities, and their relationship to reducing inflammation.

3) Does yoga really reduce stress and anxiety?
For all the talk of yoga lifting moods and calming people, the studies on this question are still surprisingly inconclusive.

Karen Pilkington, a research fellow at the University of Westminster, knows this research better than anybody: She sifted through the science for systematic reviews on yoga for both anxiety and depression. (Here's another, more recent systematic review of the evidence on yoga for depression by other authors.)

"There are indications that it might be helpful," Pilkington says. "But lots of the studies are quite small, and we definitely need more and bigger studies." In other words, yoga might help with mood disorders, but we don't yet know for sure because the studies to date have generally been so badly designed. "We can't say there’s conclusive evidence that yoga works for depression and anxiety," she explained. "We’re still really exploring yoga as an idea for testing and the best ways of testing it."

One complication here: When it comes to conditions like anxiety and depression, it can be difficult to untangle whether it's the yoga that's helping or simply the act of going out, joining a group on a regular basis, and so on. Even if yoga turns out to be unequivocally beneficial for depression, other research has shown that exercise in general can alleviate depression. So, again, it's not clear that yoga is the only way to get this benefit.

As for stress reduction, there are a few randomized trials — the highest-quality evidence — that have suggested yoga is about as effective as simple relaxation programs, more helpful than no intervention, but not as effective as stretching. Pretty mixed results.

4) Does yoga have long-term health benefits?
Possibly. To be clear, there's currently no direct evidence on yoga's long-term benefits. Researchers simply haven't tracked yogis over a span of 20 years or more and followed up to see whether they get diseases at a lower rate than non-yogis.

But that's not the whole story. There are also some randomized controlled trials suggesting that yoga may improve quality of life for diabetes patients, reduce cardiovascular disease risk factors, and even help people manage high blood pressure

How can this be? One possibility is that yoga can help reduce inflammation in the body — which turns out to be surprisingly beneficial.

You can think about inflammation in two ways. There's helpful inflammation, as when your body's immune system mounts a response to bacteria in a cut. There's also harmful inflammation. When you're stressed, your body's inflammatory response can go into overdrive, hampering its ability to fight off viruses and disease. People who are inactive, obese, or eat an unhealthy diet have higher levels of harmful inflammation. And researchers have found associations between inflammation and various chronic diseases, including cancer, cardiovascular disease, and diabetes.

Yoga — like other mind-body exercises such as tai chi and meditation — seems to be particularly helpful at reducing harmful inflammation. A 2014 meta-analysis on the effects of mind-body therapies on the immune system found that yoga reduces inflammation-based blood markers. So did this 2014 randomized control trial looking at women with breast cancer and breast cancer survivors.

Michael Irwin at UCLA's medical school, one of the authors of a 2015 descriptive review on inflammation and mind-body exercises, said, "When you look at the aerobic exercise necessary to decrease inflammation, people have to maintain very vigorous levels." But not with yoga, he continued. "Even practices with minimum levels of physical activity [like Iyengar stretches] can have large effect sizes." Researchers don't yet know why, though they think the meditative components of yoga, tai chi, and meditation may have something to do with it.

"When you compare long-term yoga practitioners to people doing other forms of exercise, you have better body awareness in yogis"
In the past few years, some academics have also begun to study "body awareness" and its relationship to a number of health outcomes. Body awareness, according to this article in PLOS One, "involves an attentional focus on and awareness of internal body sensations." The idea is that in becoming more aware of your body, you might be more likely to notice when you're stressed, in pain, or tired, and perhaps less likely to abuse your body.

This 2013 study, involving 18 people with chronic neck pain who practiced Iyengar yoga once a week for nine weeks, found that participants reported increased body awareness after practicing. In this 2005 study, which compared three groups of women — 43 doing Iyengar and ashtanga yoga, 45 doing aerobic exercise, and 51 who did neither activity — the yogis reported more body awareness and body satisfaction than the other groups. These were both qualitative studies, not experimental trials, so it's difficult to know whether the yogic types are more "body aware" to begin with or whether the yoga made the difference.

"When you compare long-term yoga practitioners to people doing other forms of exercise," said Cramer, "you have better body awareness in yogis."

5) Does yoga help with lower back pain?
(My Good Images/Shutterstock)

Yes. Yoga does seem to help alleviate lower back pain, in both the short and long term. The evidence around this is some of the best yoga research we have. This meta-analysis of the evidence on yoga for back pain, from 2013, sums it up.

[There's] found strong evidence for short-term effectiveness and moderate evidence for long-term effectiveness of yoga for chronic low-back pain in the most important patient-centered outcomes. Given the low number of adverse events, yoga can be recommended as an additional therapy to patients who do not improve with education on self-care options.

That said, there are some caveats here, too. The leading researcher on this question, Karen Sherman, notes that it's still not clear whether yoga is any better than any other form of exercise for back pain. "It’s certainly a viable form of exercise, but is it better than other exercises [for back pain]? Probably not," she says.

Some of the best research on lower back pain has only looked at one specific type of yoga — viniyoga.

Researchers haven't figured out why yoga helps with back pain. This Cochrane Review protocol offered a few guesses, suggesting that improved flexibility and muscle strength, as well as relaxation and body awareness, may help.

6) Does yoga improve flexibility and balance?

(Olesya Feketa/Shutterstock)

The research here is limited. But there are a few high-quality controlled trials that suggest yoga can help increase flexibility in young people, healthy seniors, and computer users. One small study on stroke patients suggested that yoga may improve balance, as did this study in healthy young adults.

7) Can yoga really stimulate digestion or wring out toxins?
Anyone who has taken a yoga class has probably been exposed to wild claims by the teacher that certain poses will do anything from wring out toxins to stimulate a particular part of the colon and alleviate constipation. But the science backing up these kinds of very specific claims was scant, so I asked one of the researchers, Cohen, about where they come from.

"[Teachers are] basing it on personal experience, on anecdote, on the lineage of practice that's been handed down," he said. "They are probably not basing it on Western-style analytic techniques that followed a control trial design. We just haven't gotten there yet with yoga research, testing particular poses or breathing
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