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Can your weight affect your menstrual cycle and your hormone balance?

6/25/2019

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While we may not think about it often, it turns out that our adipose (fat) cells are actually one of the largest endocrine organs in our bodies, and these cells are responsible for secreting a number of hormones that help regulate everything from appetite to the menstrual cycle.  For instance, the average woman in the US weighs just over 170 lbs, so with an average body fat range of 25-30%, approximately 40-50 lbs of her weight will be composed of adipose tissue.  In comparison, the thyroid weighs about 25 grams, the pituitary gland weighs half a gram, the pancreas weighs about 90 grams, and an ovary generally weighs 5-10 grams.  That means the total weight of these other endocrine organs is less than a pound, and while the hormones produced by these organs tends to be more potent, adipose tissue can sometimes have negative effects by the sheer volume of hormone production.

So, what kinds of hormones do adipose cells produce?  While some play expected roles in things like appetite, obesity and insulin resistance, other hormones are responsible for steroid metabolism.  In simple terms, even though we think of the ovaries and adrenal glands as responsible for sex hormone balance, at least 50% of testosterone in premenopausal women and 100% of estrogen in postmenopausal women is regulated by adipose.  Also, depending on each woman’s amount of adipose, a significant portion of estrogen can come from these cells even in premenopausal women.

Why does that matter?  That means extra adipose tissue can cause hormone related issues such as unwanted hair growth on the face/body, increased acne and in some cases, even hair loss from the head.  For women struggling with heavy menstrual cycles, this can be directly related to the increased estrogen because estrogen causes increased thickness of the uterine lining shed each month during the menstrual cycles.  More tissue in the uterus to get rid of means heavier flow and often more cramping each month.  In more severe cases, too much estrogen from adipose can even cause the menstrual cycle to stop.  While this may sound exciting to some women, a lack of normal menstrual cycle can cause everything from infertility issues (no menses=no ovulation=no egg for pregnancy) to increased risk of uterine cancer (gradual buildup of uterine lining over time without shedding can predispose to cancer).

So, too big is bad, but what about too skinny?  We can sometimes see problems at the other end of the spectrum as well.  Super-intense athletes who have extremely low body fat and women with a very low BMI may also have issues with the menstrual cycle.  If the body shifts into starvation mode because there isn’t enough body fat, then one of the functions that may stop is the menstrual cycle and ovulation.

In general, a regular menstrual cycle with normal flow can be a marker of good overall health in premenopausal women.  Granted, there are always exceptions to this rule.  For instance, some women may not have a cycle due to hormonal contraception, which can be normal.  Also, we know that for some women who are very athletic, such as competitive weightlifters, BMI may not be the perfect measure of health.  That being said, generally a healthy BMI ranges from 18.5-24.9, and the average BMI for women in the US is 29.6, which means many women are just below the threshold for obesity.  So, if you’ve been having menstrual cycle issues with either heavy or irregular flow, and your BMI is elevated, especially above 35, then one of the simplest interventions to help improve your cycle may be weight loss.  These normal cycles can also provide health benefits of improved fertility and decreased uterine cancer risk.  By regulating your hormones on your own, then you may be able to avoid having to take synthetic hormones and in turn, also having to deal with unwanted side effects from these medications.  Besides, who wants to deal with daily pills anyway?

Dr. Nick
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Do Fasting Diets Work?

6/11/2019

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Let’s face it, in today’s world everyone’s always trying to lose a little weight. We live in a world where UberEATS and groceries can be delivered to your doorstep.  We have dishwashers, washing machines, cars and all sorts of luxuries that we have never had.  If you think how many calories you would have been burning hunting for food and fetching well water, it is not surprising that in our modern-day world it’s so hard to maintain our figure and physical fitness. 

​In our quest to look cute on the beach and be healthy too, there are so many diets out there that claim to help you lose weight.  The question is do they work?  One of the newest ones that has gained a lot of traction is the fasting diet.  There are lots of variations- fast for days, fast for hours and alternate.  Is this the newest fad diet or does it work?
Most of the options for this type of diet recommend severe calorie restrictions the days that you are fasting (500 for women and 600 for men).  Some recommend every other day fasting while some recommend 2 days of fasting per week.  Now, if you are restricting your caloric intake like this even if it is just 2 days a week it’s not surprising that you will experience some weight loss and health benefit. 

Also, most fast diets are rooted in achieving health and fitness goals.  So even while they are saying on your off days you can eat what you please, their recommendations are to eat clean and stick with lean meats and limit processed foods on your non fasting days.  Eating clean and avoiding sugar and highly processed foods is always beneficial to both your health and weight loss goals. 

In addition, there is a physiologic reason as to why fasting if done right can be so successful.  One of the theories out there is that by snacking all day, the body is constantly producing insulin spikes which can put oxidative stress on the body.  This worsens the responsiveness of our cells to insulin creating an environment of resistance to insulin.  Decreasing insulin levels by fasting will cause several things to happen.  First, blood glucose will remain normal and the body will switch to burning fat stores in the absence of food.  This is exactly what we want- we want the body to burn all that extra fat!  Second, regular fasting in addition to lowering insulin levels has been shown to improve insulin sensitivity.  Fasting, in essence, is an efficient way of reducing insulin resistance. 

Let’s review how fasting can help you lose weight.  First calorie restriction and eating healthy non processed foods will help you lose weight.  Second, while fasting your body will start to burn fat stores since it doesn’t have another option.  Third, decreased production of insulin will combat insulin resistance and provide you with another tool to combat insulin resistance and the oxidative stress high insulin levels place on your organs and blood vessels. 

Of course, there is always a catch.  If it was that easy, everyone would be doing it right?  For many fasting even twice a week is just too cumbersome.  Sticking to a 500-calorie diet on your fasting days is hard.  In a society where food is so cheap and easily available, this is a much more difficult task than it appears to be. 

So, will the fast diet help you lose weight?  It likely will if done right.  However, it will not be an easy task, and be sure to discuss any diet plan with your healthcare provider prior to starting.  Hope this helps, and good luck on all your weight loss goals!
 
Dr. Pam
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Is our processed food making us fat?

6/4/2019

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Life has undoubtedly gotten busier for many families, with a higher number of families with both parents who work, and for those families with children, at least 75 activities per child to attend both practice and competitions.  No wonder processed food has made such a rise in popularity.  I mean, who has time to cook with all of the other obligations?  Unfortunately, these grab-and-go options may not be the best choice in the long run.

So, what exactly is processed food?  Essentially, if you can either take it out of the wrapper and nosh on it or warm it up and scarf it, then it’s probably processed.  The same generally holds true if the ingredients are essentially unpronounceable.  If you can pick it from a plant, harvest it from an animal, and it requires more than a defrost setting on a stove or microwave, then it’s much less likely to be highly processed.  Typically, less processed foods have a shorter shelf life as well due to the lack of preservatives.

Well, what’s the problem with easy?  Regrettably, there are a number of issues with processed foods.  Processed foods tend to be higher in salt, which can both increase blood pressure as well as retention of water (which in turn can increase weight and swelling/bloating).  Sugar is often a major ingredient, which may have negative effects on both insulin resistance as well as decreasing satiety (sensation of fullness).  Also, prepackaged foods tend to have larger portions, and this increased portion size can encourage overeating.  Lastly, this doesn’t even begin to touch on ultra-processed drinks.  Studies suggest that sugary drinks provide an increase in calorie intake without providing nearly the level of satiety that similar calorie intake from food can provide.  Most are aware that soda isn’t great for health, but even fruit juice without added sugar can provide a similar carb/calorie profile.  While fruit is great for health, it loses the added fullness benefits of fiber and the bulk of the fruit itself when ingested as a juice.

Are there better options?  Actually, there are a number of good choices available.  Exchanges like water and fruits for sodas and juice and snacks of nuts rather than chips are a simple place to start.  Using fresh ingredients to prepare you meals on the weekend for the week ahead allow you much more control over both your salt and sugar intake, and the effort required to prepare you meals can reduce impulse eating that happens “just because (insert your favorite junk food) was there in the house.”

Ultimately big changes begin with simple steps.  Starting with the steps that are easiest for you and then working toward the more involved processes can allow for maintainable improvements in your health as opposed to very drastic but untenable phases.  While sudden and huge lifestyle modifications can show quick results, these changes often ultimately result in frustration due to the return of previous habits and in turn, previous health status.  Good luck with your fitness goals, and here’s to a healthy summer!

Dr. Nick
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