Search results for soy

Crow’s feet? What crow’s feet?!

Posted by Liz on Nov 14, 2011 in aging, appearance, menopause | 2 comments

Crow’s feet. Most of us start to develop them in our mid to-late 30s and by the time we reach the age of 50, they’re pretty pronounced. This is no surprise because aging skin is associated with a decline in elasticity and moisture. And, let’s face it, if you grew up with light-coloured eyes like I did, you have an even greater tendency to squint in bright light, another factor contributing to those tell tale lines around the eyes.  In women in particular, crow’s feet are a rule and not an exception, as aging is accompanied by a loss of estrogen, which has been linked with as great as a 30% loss of collagen in the dermis (the thick, sturdy layer of connective tissue that comprises about 90% of the skin’s thickness) within the first five years of menopause. Collagen, which is the most abundant protein in the body, is responsible for  skin’s durability and strength. As it declines, skin starts to sag and wrinkles form. Oh, happy day!

Unfortunately, researchers continue to debunk claims that replacing estrogen can improve the skin’s appearance. That’s the bad news. Likewise, don’t look for expensive moisturizers or facials to do the trick either. However, there are data that suggest that intake of soy isoflavones may improve aging skin. And once again, S-equol is the winner in the isoflavone antiaging department.

A bit of background…

If you are new to Flashfree, you may be unfamiliar with S-equol. Briefly, S-equol is a metabolite of a major soy isoflavone called daidzein. It has a particular affinity for estrogen receptors and possesses some estrogen-type activity of its own. S-equol is produced in the gastrointestinal tract however the ability to actually manufacture it depends on the presence of certain microflora there. Consequently, only 30% to 60% of individuals are actually able to produce S-equol on their own (although this figure is believed to be higher among Asians and vegetarians). (You can read a full range of posts on S-equol here)

Because skin cells responsible for producing collagen express estrogen, researchers believe that S-equol and its affinity for estrogen receptors may impact skin very similar to the way that estrogen does. In fact, when 101 Japanese menopausal women randomly took 10 mg or 30 mg standardized S-equol  (SE5-OH) or a sugar pill daily for 12 weeks, that is exactly what they found. Even more interesting was the fact that S-equol was studied in women who do not produce it naturally in their bodies (even though s-equol producers are believed to gain greater benefit from soy products).

Over weeks, researchers measured numerous skin parameters, including crow’s feet, wrinkles, the degree that the skin was hydrated, skin elasticity and loss of water through the skin. To equalize the playing field, measurements were taken in a room that was the same temperature and humidity level each time, and women were instructed to remove any cosmetics using the same cleansing foam 20 minutes before each exam. They were also advised not to alter anything about their diet or sun exposure during the study period.

The findings?

Both 10 mg and 30 mg daily standardized S-equol significantly improved crow’s feet wrinkles/reduced the total wrinkle area compared to placebo tablet. And,  30 mg daily dose also significantly decreased wrinkle depth as well. What’s more, ingesting S-equol supplements did not appear to affect uterine or breast tissues or hormone status, indicating that unlike hormone replacement, using S-equol to combat declining estrogen levels is safe.

So, how does it work?

Although researchers say that the need a longer observation period to confirm S-equol action on skin, they believe that like hormone therapy, it gradually boosts the quantity and quality of skin collagen, and may even help preserve skin hydration from within. Additionally, because skin aging does not solely rely on estrogen levels, S-equol may also act as an antioxidant and help transport nutrients to the upper and middle skin layers.  And more importantly, other studies have shown that when Japanese,White, Hispanic and African-American women were compared, the Asian women had the least amount of wrinkling and sagging. If you translate the findings and consider the degree of differences in wrinkling among ethnic groups, it is very possible that S-equol may benefit women living in the U.S. even more than their Japanese peers.

Is it possible that S-equol is truly a Fountain of Youth is in pill form? Yikes! This is pretty darn exciting! Me? I’m off to the store in search of standardized S-equol. Crow’s feet? What crow’s feet?!

Hot flashes and Japanese herbal medicine: the lowdown on TU-025

Posted by Liz on Aug 1, 2011 in hot flash, Kampo/traditional Japanese medicine | 1 comment

Women who choose to go the alternative route for menopausal hot flashes have few evidenced-based options. Although acupuncture and standardized black cohosh have been shown to be effective in ameliorating hot flashes, others, including red clover and even soy, have been less successful. Consequently, herbal practitioners often turn to Traditional Chinese medicine (TCM) herbal formulations or the lesser known (in the U.S.) Japanese multiherb medicinal formulations known as Kampo. Interestingly, the term Kampo refers to ‘the way of China” and the practice which is several thousand years old is based on TCM.

Kampo is prescribed by over 90% of Japanese gynecologists and is regulated by the Japanese Ministry of Health to insure manufacturing standards and product stability.  One of the most popular Kampo agents for perimenopausal hot flash management is an 1,800 year old formulaton known as “keishibukuryogan” or in the US, as TU-025. Comprised of a combination of cinnamon bark, peony root, peach kernal and mountain bark, it active ingredient remains unknown. Japanese data from both the government and the manufacturer demonstrate a very low incidence of side effects and no estrogenic activity, which means that theoretically, it could be safely used by women who have had breast or gynecologic cancers. Nevertheless, its utility in American women has not been known, at least until now.

In a study published in the August issue of Menopause, 178 postmenopausal women were randomly assigned placebo, 7.5 g/daily TU-025 or 12.5 g/daily TU-025 for 12 weeks. All participants reported 28 or more hot flashes a week, had been in menopause for at least a year, had stopped using hormones for at least 8 weeks if they were already using them, smoked less than 10 cigarettes a day and most were slightly overweight or obese (based on body mass index). None were using antidepressants (which studies have shown may help alleviate hot flashes), nor did they have a history of breast or uterine cancer. While the 7.5 gram daily is the dose taken most often by Japanese women, the researchers upped the dose to 12.5 gm daily to account for a larger sized American woman.

Wednesday Bubble: Black cohosh – is it safe?

Posted by Liz on Jun 22, 2011 in herbal medicine | 2 comments

Back in 2009, I wrote a post regarding black cohosh (better known in scientific circles as Cimicifuga racemosa) and potential safety issues, namely harm to the liver. In it, I discussed a small case review that showed no link between ingestion of black cohosh and liver toxicity. And yet, in 2006 the European Medicines Agency and the Committee on Herbal Medicinal Products released a public statement alerting health authorities to 42 suspected liver reactions among women taking black cohosh. In the very same report, they noted how inadequately adverse reactions were documented. Indeed, only 16 of the cases were considered to have sufficient data to allow for proper assessment of a potential link, and of these, only four showed any sort of association, albeit, unproven. Regardless,  the statement resulted in Italian health authorities requesting a precautionary withdrawal of black cohosh preparations from the market, and UK authorities issuing strict label requirements and warnings.

Hence, I was intrigued when I ran across a detailed review of black cohosh safety, both from perspective of over 107 patient cases and of published study findings. Following is the lowdown:

• An Italian clinic regularly prescribed 500 mg or 1000 mg daily black cohosh, either alone or in combination with other herbs (e.g. soy isoflavones, red clover or alfalfa) for treatment of menopause symptoms and disorders (e.g. anxiety, depression, hot flashes and joint pain). None of these herbs were prescribed to women with previous cancer of the breast, ovaries, uterus or pituitary gland. Moreover, the researchers say that they had not received any reports of any sort of adverse event.
• Still, following the European health statement, they contacted 107 women in good health and in different phases of menopause, took blood samples, underwent clinical examination and participated in phone interviews to evaluate if they were still taking the herbs. Of these women, only five had chronic but benign liver disease and one, hepatitis.

The findings? Despite the four patients suffering from prior benign liver disease, there was no additional sign of liver problems nor altered laboratories indicating a worsening condition or a new condition. Nor were there any clinical signs of liver damage after a year of using high dosages of black cohosh.

The researchers who reviewed and examined patients as well as the published literature point out that the liver is central to metabolizing most drugs and hence, there is a potential for an adverse liver event from taking nearly every medication that involves liver metabolism. They note that a step-by-step examination is also necessary to rule out other causes of liver damage, including infection, alcohol use and related conditions. In so far as herbs go, they write that “it is very important before an official statement about any adverse reaction referred to an herb based product to know the brand, dose of substance assumed, type of extract [and] content of possible contaminants.” They go on to state that it is their opinion the statement could actually be used as proof that black cohosh liver toxicity is scarce because despite over a million doses used worldwide annually, there is not any fully proven case of liver toxicity. Moreover, they claim that black cohosh safety has already been established in over 3,800 participants in clinical trials.  Their conclusion? black cohosh should be considered safe, at least in so far as liver toxicity goes.

What should you do?

If you wish to try black cohosh, speak to a licensed practitioner well versed in herbal medicines. Look for a standardized form to insure that the pills contain what they say they do. And if you start feeling poorly while taking black cohosh? Stop immediately and contact the person responsible for your care.

Black cohosh and liver toxicity. This one appears to be a bubble bursting worthy.

Hot flashes and night sweats. Mind over matter?

Posted by Liz on Jun 20, 2011 in hot flash, nightsweats | 2 comments

[youtube=http://www.youtube.com/watch?v=LH8xbDGv7oY]

Hot flashes and night sweats, oh my! They hit like a ton of bricks when you’re least expecting them and then exit as quickly as they arrived. They affect up to 70% of women and tend to worsen in late perimenopause and in menopause. And while hormone replacement therapy may decrease how bothersome they are and good health diminish frequency and severity, it appears that how well women believe they are controlling their symptoms outplays all of these other factors, so much so that perceived control may actually beneficially affect emotional distress, prevalence and severity of symptoms and how often women engage in behaviors that benefit their health.

Findings of a  new study that’s just been published online in Maturitas run counter to many that came before it, studies that have shown that smoking and body mass index and alcohol consumption, as well as marital status, age, professional status, parity, educational status and income may significantly influence hot flash prevalence, frequency and severity. However, this time, researchers found that among 243 women between the ages of 42 and 60 years, the most important factor was control.

Participants were first asked to assess the intensity and intensity of hot flashes and night sweats on a five point scale (i.e. never to daily to almost every day and not intense to extremely intense). They were also asked to estimate perceived control over their symptoms using a validated rating scale. Finally, menopausal status, i.e. pre-, peri- and post- were assessed. Additionally, common sociodemographic and lifestyle factors shown to influence hot flashes and sweats were accounted for.

Importantly, women who used no medications or used soy and herbal products had higher perceived control over their symptoms than women who used hormone therapy. Moreover, this distinction had nothing to do with how severe their symptoms were as the researchers say that severity was similar among all three.  Additionally, women who drank greater amounts of coffee appeared to perceive their symptoms as less severe than those who drank less. While previous research has found the opposite, i.e. caffeine intake predicts the occurrence of hot flashes, it is possible that the stimulation associated with caffeine might have boosted coping mechanisms and strategies, thereby leading to fewer or less severe symptoms. Still, perceived control ruled the day, leading to a significant beneficial impact on severity of flashes and night sweats. The reason? It’s possible that feeling in control leads to other behavioral changes, such as dressing in many layers to allow for adjustments as the inner temperatures increase, avoiding spicy foods or effectively controlling stress. However, the results also imply that how much control we feel we have strongly influences how we ultimately feel.

Clearly, more research is needed. But when it comes to hot flashes and night sweats, mind over matter may play a strong role.

Cocoa loco? The lowdown on chocolate and heart disease

Posted by Liz on Jun 17, 2011 in heart disease | 0 comments

[youtube=http://www.youtube.com/watch?v=RZ-uV72pQKI]

If you are a chocoholic, I bet you’ve noticed the headlines linking chocolate to a reduced risk of heart disease. In fact, data from the Kuna Indians (a tribe indigenous to Panama) have shown that cocoa and in particular dark chocolate are associated with declines in blood pressure. More recently, a large government study showed an even greater benefit in terms of a significant reduction in coronary heart disease prevalence. And in women, who have an increased risk for heart disease as they age (not only due to the increase in abdominal fat or changes in their blood fat levels but also to loss of ovarian function), chocolate has ben shown to slightly lower the risk of dying from heart disease.

Sounds promising and quite frankly, awesome, right?

Well…before you run out to the grocery or chocolate shop, you may want to read further…

Researchers have long been interested in flavonoids and in particular (at least in so far as menopause goes) in isoflavones. (See soy posts for more on isoflavones). The specific compound or molecule of interest in cocoa (the non-fat component cocoa bean extract or liquor) are flavanols, which are also found in lower concentration in apricots, peaches, apples, green and black tea, red wine and cider). Note that the quantity of flavanols in chocolate depends on manufacturing, including fermentation and roasting, and how much treatment is given to reducing bitterness and improving consistency. What this means is that dark chocolate has the highest concentration of flavanols and milk, the lowest.

What have researchers learned so far?

• Flavanols found in cocoa and cocoa powder may be powerful antioxidants and as such, help to mitigate certain factors that contribute to atherosclerosis, such as the formation of plaques in the arteries that lead to stroke and other coronary events. Thus, as antioxidants, they may actually neutralize toxic oxygen species circulating in the bloodstream.
• Experimental data suggest that ingestion of flavanols may help to regulate proteins and other compounds that encourage an inflammatory response to leads to heart disease.
• Flavanols may also help to stabilize the lining and muscular tone of the arteries and prevent them from narrowing.
• Additionally, flavanols may moderately protect against high blood pressures, although studies have been mixed.
• Finally, flavanols may help to maintain blood sugar levels and improve the ratio of good to bad fats in the blood.

Wow, this sounds fantastic! And all it takes is a daily diet of dark chocolate?

Here’s the great news. Researchers are devoting increasing amounts of time toward learning how certain foods affect (and benefit) health. However, in so far as chocolate goes? In a thorough review published online in Maturitas, they write that of the studies that have been conducted, it’s truly difficult to determine whether or not there is a causal relationship, i.e. eating A causes B, or eating chocolate prevents heart disease. In the case of chocolate in particular, factors like manufacturing can influence study findings. Moreover, researchers still aren’t sure if they should be focusing on flavanols or some other component of cocoa. It is also possible that only people who already have some sort of problem or condition will benefit  from eating more chocolate.

The bottom line? Dark chocolate in moderation, won’t hurt you and may actually help you. However, you may want to temper expectations. At least a wee bit. Dare to dream though…perhaps cocoa will ultimately defy explanation!