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When to Choose Menstrual Cycle Mapping vs Fertility Testing

Posted by Ben White on

When to Choose Menstrual Cycle Mapping vs Fertility Testing

ZRT Laboratory introduced the Fertility Profile to assist women in identifying possible hormonal causes of infertility. More recently ZRT launched the Menstrual Cycle Mapping (MCM) test that allows women to map time points throughout their menstrual cycle, measuring levels of estrogen, progesterone and luteinizing hormone (LH). Since the MCM test was introduced there has been some confusion as to which test is best to evaluate fertility/infertility. The aim of this blog is to clarify the differences between the two tests and when best to use each. Menstrual Cycle Mapping The MCM profile measures estrone-3-glucuronide (E1G), pregnanediol-3-glucuronide (PDG) and luteinizing hormone...

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STRESS & ADRENAL HORMONES

Posted by Ben White on

STRESS & ADRENAL HORMONES

Since 1998, ZRT has tested adrenal hormones for 1.4 million individuals. The adrenal glands, otherwise known as the “stress glands,” enable our bodies to cope with stress and survive. Shaped like two tiny pyramids, they sit atop the kidneys and from this central location mobilize the response to changes in our environment. Whether stress comes from outside in the form of a natural disaster, or from within like the anxiety we experience before public speaking, it’s the adrenals’ job to help us adapt to the situation. They accomplish this by secreting key hormones:  Cortisol: The primary stress hormone that fine-tunes...

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Mental Health & Mitochondria

Posted by Ben White on

Mental Health & Mitochondria

Why are Mitochondria Important?  Mitochondria are organelles that are present in every cell of the body except red blood cells. Probably everyone reading this learned about these little guys in high sch­ool biology, where they were described as "the energy packs of the cells." About 20% of our body weight is mitochondria. This translates to about 250 quadrillion of these organelles. There are 37.2 trillion body cells with an average of 1 to 2000 mitochondria per cell. Sperm each have about 16 mitochondria and oocytes have 100,000 (which shows you where the power is). The accepted theory is that mitochondria...

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Neurotransmitters, Mood & the Perception of Stress

Posted by Ben White on

Neurotransmitters, Mood & the Perception of Stress

When we talk about “stress,” or allostatic load, in terms of the perception of an event, we must realize that these “events” must first be translated into neurochemical signals before they trigger the HPA axis. Therefore, the sensitivity and outcome of translating these events (whether they are ongoing events, memories of past events, or stressful anticipation of unrealized events), is highly dependent upon signaling from other neurotransmitters. In fact, the signaling neurotransmitters that manage mood and affect often overlap with measures of HPA axis activation, and cannot be easily distinguished in some subjects. [1] While the detailed influence of neurotransmitters, such...

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Excessive Sweating, Athletic Performance & Iodine Deficiency

Posted by Ben White on

Excessive Sweating, Athletic Performance & Iodine Deficiency

While working or exercising, do you sweat for an extended period of time? Are you constantly exposed to a hot or humid environment? Do you take pre or post workout supplements and/or a multivitamin to replenish key nutrients lost during exercise? Are you aware that excessive perspiration has been linked to iodine deficiency? Thyroid hormones, thyroxine (T4) and triiodothyronine (T3), are manufactured in the thyroid gland using iodine. Iodine consumed in the diet circulates in the bloodstream and is selectively taken up by the thyroid gland where, through a series of complex biochemical reactions, it is attached to tyrosine and...

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