Hot Flashes? Can’t take Hormones? Here’s some help with the Heat!

Hot flashes occur in over 85% of women during the years around menopause.  For many women, hormone therapy may not be an option for turning down the heat from night sweats and hot flashes.  After release of the Women’s Health Initiative (WHI) in July 2002, many women abruptly stopped their hormone therapy (HT) while others questioned their  safety.    Initial results from WHI showed an increase in breast cancer, heart attack, and stroke.  With a decade of hindsight we now better know the true risks and benefits of HT.  Even with this new evidence showing a major benefit in women starting hormone therapy near the time of menopause (within 10 years), there may still be many women who may not be able to take estrogen.   What are some of their options? 

Hot flashes, also known as hot flushes are very commonThese are commonly known “vasomotor symptoms” in the research and are categorized by severity and frequency:

  •  Mild: a feeling of warmth in the face, neck and chest.
  •  Moderate: feeling of warmth with sweating
  •  Severe: feeling of warmth, with sweating and loss of concentration

 

 

What are the options available for women who cannot take HT?

After reviewing numerous studies, I have compiled a list of non-hormonal prescription  and non-prescription medications which have been shown to decrease hot flashes.   Interestingly, many of these clinical trials were done in women with a history of breast cancer, receiving tamoxifen.  Furthermore, many of these trials had a very high placebo rate, i.e. those women not receiving the study medication   (placebo pill) showed  a high rate of benefit compared to those receiving the actual study medication.  This is known as the “placebo effect”.  In these studies, the placebo response rate ranged from 18-40%.

 

 

Non-hormonal/ Prescription Medications                                         

1)      SSRI’s/SSNRI’s : Best results occurred with Venlafaxine ( Effexor)  with 63% reduction in hot flashes in patients receiving 75 mg dose, vs. 45% in those receiving lower dose ( 37.5 mg) compared to 20% reduction in placebo group.  The next best was Paroxetine (Paxil), followed by Fluoxetine (Prozac).

2)      Gabapentin ( Neurontin); 45% decrease in hot flashes vs. 29% placebo, at dose of 300 mg three times a day.

3)      Clonidine ( Catapres): very few studies with only short term use, up to 12 weeks, reduces hot flashes by 15-20%., with dose of 0.1 mg/day.

4)      Belladonna/ergotamine tartrate/Phenobarbital combination ( Bellergal): decreased hot flashes by 75 % vs. 68% in placebo, dose of one tablet three times a day.

   Black Kohash plant

Non-hormonal /Non-prescription Options

1)      Black Kohash: This is the most studied and popular herb for treatment of hot flashes.   Results of studies show inconsistent results and dosages varied.  American College of Ob/Gyn ( ACOG) states that black kohash may be helpful in the short-term ( less than six months) treatment of women with vasomotor symptoms.

 

2)      Soy isoflavones: Studies showed inconsistent results. Some showed significant reduction in women with moderate to severe hot flashes.    ACOG recommends that soy and isoflavones  be used in the short-term , less than 2 years and that they should be used with caution in women with an estrogen-dependent cancer,  given the possible interaction with estrogen (39).

 

3)      Red Clover, Ginseng, Evening Primrose oil, Wild Yam: In clinical trials, no significant difference in hot flash reduction compared to placebo.  I have included these because many patients  frequently do use these remedies and do find some relief, although for only a short period of time

Take Home Tips:

1)      Hot flashes occur very frequently in women around the time of menopause and can significantly affect a woman’s quality of life.

2)      A thorough medical history should be taken to rule out other causes for hot flashes, such as thyroid disease.

3)      Evaluation of current medications and conditions should be considered with you and your health care provider to determine the best option for you, be it hormonal, or non-hormonal. 

4)      There are prescription medications available as well as herbal remedies.

5)      Consult with your health care provider before initiating any treatment.

Then you too, can be lying in the green grass…calm, cool and collected!

 

Lighting the way…

Dr. Diana

 

Citations:

  1. 1.      Roussouw, JE. Et al.  (2002) Writing Group for the Women’s Health Initiative Investigators.  Risks and benefits of estrogen plus progestin in healthy postmenopausal women: principal results from the Women’s Health Initiative randomized control trial.  JAMA; 288: 321-33.

 

  1. 2.      Carroll, DG. (2006). Nonhormonal Therapies for Hot Flashes in Menopause. Am Fam Physician, Feb 1; 73 (3): 457-464.

 

 

 

Birth Control for Men?

Sounds like an oxymoron, right?  But it’s true.

Now it’s the man’s turn to assume some responsibility in the contraceptive arena!  No longer is it just a man’s choice between using condoms  or getting a vasectomy.  Amazing new options are on the horizon!  Researchers are investigating various forms, targeted solely towards men, which are showing very promising results.  These options range from a long-acting injectable gel to a quick-acting male pill that could potentially markedly reduce the transmission of HIV.

According to a recent survey conducted by the U.S. Government’s Center for Disease Control (CDC), more than 80 percent of heterosexual women have used birth control pills at some point in their lives to prevent pregnancy.    Birth control pills became available to women in the 1960’s and represent the most common contraceptive used in the United States today.  Interestingly, global demand for male birth control appears increasingly popular, with a 2005 German survey revealing that 60 percent of men in Spain, Germany, Brazil and Mexico are willing to use a male contraceptive.

What is this new injection procedure?

It’s called Vasalgel and involves an injection into a man’s genitals which inhibits sperm motility.  It’s a new form of contraception known as, RISUG, reversible inhibition of sperm under guidance (1).  Yes, many men may become queasy just imagining a needle being injected into these tender areas.  After receiving a local anesthetic, a small amount of polymer gel is inserted into the vas deferens of each testicle.   The vas deferens is the conduit which transports sperm from the testicle to the penis.  The procedure apparently takes less than 15 minutes, works by destroying the sperm, lasts up to 10 or more years and is more easily reversible than a vasectomy!

When and if the man decides to return his sperm back to speedy and motile swimmers, another shot is given.  Within 2-3 months, active, functional sperm are functioning again.

These studies have been ongoing for the past 25 years and found to be safe in both humans and animals.  Researchers are optimistic that the procedure will become available in the U.S. by 2015, with clinical trials beginning this year.  At present, trials are only being conducted in India.

What about the new male birth control pill

In Papua Island, Indonesia, tribesmen have discovered a shrub called “Gandarusa” that acts like a birth control pill for men.  Per one tribesman, “If you chew the leaves often enough, your wife won’t get pregnant.”  The potential benefits derived from this shrub are undergoing close evaluation and appear to work by slowing down the activity of certain enzymes in the sperm that allow them to penetrate a woman’s egg.  For fertilization to occur, a sperm must enter the egg.  According to Sugiri Syarief, the head of Indonesia’s state-run National Family Planning Coordination Board, multiple animal and human trials have been conducted since the 1990’s and the plant’s effective compound was patented in 2007.  Researchers have tested the pill on two different groups of male volunteers, the first 36 men, and later with 120 men.  Trials involving more than 350 men are presently being done to verify that the sperm remain healthy yet are incapable of this critical penetration process in fertilization.

What else is looming on the horizon? 

Possibly another type of male birth control pill may become available.  Discovered by accident while studying male infertility patients, a group of Scottish scientists recently found a key gene essential for sperm development.   Per Dr. Lee Smith at the University of Edinburgh in Scotland, if scientists are able to regulate the Katna1 gene in the testes, they could prevent sperm from maturing completely, making them ineffective without changing hormone levels (2).

So why hasn’t the male birth control pill become available in the United States?

Profit, or lack thereof, is the apparent culprit!   Per Elaine Lissner, director of the non-profit Male Contraception Information Project in San Francisco, the impasse to male birth control pills has been the lack of profitability for the pharmaceutical giants.  “It’s a nightmare from the ‘for-profit’ standpoint.  We have to accept that the needs of for-profit entities and the needs of the public don’t always perfectly match.”

Definitely makes one wonder – what are pharmaceutical companies actually pouring their financial resources into?  Another drug for erectile dysfunction which makes a hearty return on investment or a male birth control pill which yields little return but carries huge global population impact?  Well, time will tell but I’m thinking the former!

What do you think?  Please share your comments!

Citations:

1. http://www.globalpost.com/dispatch/news/asia-pacific/indonesia/110224/indonesia-birth-control-pill-papua-men

2. http://www.globalpost.com/dispatch/news/health/120525/sperm-gene-discovery-could-lead-to-male-birth-control-pill

 

Lighting the way…

Dr. Diana

Dr. Diana
 

One Step Closer to a “Female Viagra”?

We’ve all seen the commercials for the little blue pill, Viagra. Men jumping for joy while the song , “We are the Champions”, by Queen, is blasting in the background. Ever wonder why the little blue pill that has worked wonders for male sexual dysfunction never made it into a little “pink” pill?

Well, new research led by a team of researchers at Pfizer’s labs in England, using a novel prototype drug may pave the way for discovering more about the mechanisms underlying female sexual arousal and developing a “female Viagra”. (1),

It is estimated that approximately 40% of women experience some type of sexual disorder, with desire and arousal being the most common (2,3). At present there is not a single US FDA approved medication for treatment of sexual problems in women. When Pfizer initially marketed Viagra for men, there were high hopes that Viagra, sildenafil citrate, would work as effectively for women and represent the “Holy Grail” that many pharmaceutical companies were vying to find.

The Advent of the “Blue Pill”

Viagra was initially developed by British scientists and brought to market by Pfizer, becoming available in 1998. Since this time, sildenafil has been the primary treatment for erectile dysfunction in men. Viagra works by increasing blood flow, or vasocongestion, in the erectile tissue located in the penis. For those biochemists out there, the mechanism of action involves the protection of cyclic guanosine monophosphate (cGMP) from being metabolized by a certain enzyme, phosphodiesterase type 5, leading to smooth muscle relaxation and increased inflow of blood into the spongy tissue of the penis, causing an erection (4).

What did studies in women taking Viagra find?

Definitely not the same results as in men! One large study involved premenopausal and postmenopausal women with female sexual arousal disorder comparing 10-100 mg sildenafil with matching placebo. Unfortunately, there was no perceived difference in improvement of sexual response in the women in the Viagra compared to placebo (5). Other studies also confirmed these findings.

So how are we a step closer to a “female Viagra”?
A research group led by Chris Wayman at the Pfizer lab found that electrically stimulating the pelvic nerve increases blood flow to the genitalia and that by using a prototype drug ( UK-414, 498) this effect was enhanced. The drug which was tested on rabbits and found increased blood flow specifically to the genitalia. The key component is that arousal was initially stimulated in the female rabbits and then the drug was administered. “The drug would not create arousal out of nowhere, however, would boost blood flow when accompanied by desire and sexual stimulation”, said Wayman.

According to Sheryl Kingsberg at Case Medical Center in Cleveland, this new discovery will help only a minority of women who have diagnosable arousal disorders, approximately 5% of women (6). “This is the closest thing out there to Viagra for women, but the problem is that a Viagra-like effect will not solve the majority of sexual dysfunction cases in women. In contrast to men in whom erections have played a huge role in sexual health, for women arousal is not the key problem, desire is.”

Though the prototype itself is unlikely to become a drug according to Wayman, “Testing the drug has helped to defog the mystery behind Female Sexual Arousal Disorder.”So we are left with the million dollar question of how to increase desire in women.

As we know female sexual response is complex and can’t be flipped on like a light switch. It’s more like a complex control panel.

Presently, researchers are investigating specific medications which work “above the belt” in women, targeting areas in the brain responsible for desire…because for women, the main sexual organ is the brain!

In the meantime, start doing your own research.

What make you feel more desire?
What makes you feel more desirable?

I believe that “you first need to feel desirable — to then have desire- “

Citations:
1. Wayman, CP. et al. UK-414,495, a selective inhibitor of neutral endopeptidase, potentiates pelvic nerve-stimulated increases in female genital blood flow in the anaesthetized rabbit. British Journal of Pharmacology. 2010; May: 160 (1): 51-59.

2. Laumann, EO. et al. Sexual Dysfunction in the United States: Prevalence and Predictors. JAMA, 1999; 281 (6): 537 -544.

3. Laumann, EO et al. A population- based survey of sexual activity, sexual problems and associated help-seeking behavior patterns in mature adults in the United States of America. Int.J. Impot. Res. 2009; May-June: 21(3): 171-178.
4. Webb, DJ et al. Sildenafil citrate and blood-pressure lowering drugs : results of drug interaction studies with an organic nitrate and a calcium antagonist. Am. J. Cardiol, 1999; 83: (5A): 21C – 28C.

5. Basson, R. et al. Efficacy and safety of sildenafil citrate in women associated with female sexual arousal disorder. Journal of Women’s Health and Gender-Based Medicine. 2002;11:367-377.

6. Are We a Step Closer to a Viagra for Women? http://abcnews.go.com/Health/Wellness/viagra-women-female-sexual-dysfunction-spotlight.

Antidepressants: Are they Killing Your Sex Drive?

Did you know that over the past two decades the rate of antidepressant use has increased nearly 400%? It is estimated that approximately 11% of all Americans aged 12 and older are now taking some form of anti-depressant medication. According to the US National Health and Nutrition Examination which analyzed data from 2005-2008, antidepressants are now the third most common prescription drug taken by Americans of all ages and most frequently used by those aged 18 – 44 (1).
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Can I use my husband’s Viagra?

photo credit: Paul-in-London

If your partner’s doctor diagnoses him with erectile dysfunction, he may be prescribed a medication such as Viagra.  While this little blue pill has done wonders for men, it has not panned out to be a panacea for women.  For men, Viagra causes smooth muscle relaxation, which increases blood flow to the penis, allowing it to engorge and become erect.  In women, the issue with
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Certain medications can sedate your love life

photo credit:  D Sharon Pruitt

If you’re experiencing diminished libido, it could be the result of a medical condition.  Have you had a physical recently? 

What habits (poor diet, smoking, etc.) might be negatively impacting your health and/or sexual desire? 

Are you currently taking any medications (prescription and/or nonprescription)? 

Would it surprise you to know that both prescription and nonprescription medications can alter sexual desire, arousal, and orgasm?  They can.

Some medications interfere with libido by affecting the…
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