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A new blood test can now diagnose Alzheimer's disease with very high accuracy.

The P-tau217 test is more accurate than an MRI & as good as an expensive PET scans.

High risk cases can sometimes be predicted 20 years in advance.

jamanetwork.com/journals/jam... #Alzheimers #dementia #AD #Ptau217
PSA testing can save life.

The lifetime risk of prostate cancer in US:
- diagnosis: 1-in-10 (2nd only to breast cancer).
- death: 1-in-25 (5th).
- 5-year survival: 98%.

The USPTF, ACP, AUA recommend PSA screening (with as simple as a finger prick test).

rxhometest.com/product/psa-... #PSAtest
February 10, 2026 at 11:56 PM
This Heart Health Month, go beyond standard markers:

-Lipoprotein(a): independent marker of heart health. Below 5 mg/dl-->ideal. Higher-->risk of inflammation & atherosclerosis
-APOA1 (HDL related): higher->healthy
-APOB (LDL related): lower->healthy
-CRP: ideally <3

rxhometest.com/product/chol...
February 4, 2026 at 1:58 AM
Glutamate is a neurotransmitter that is brain's main 'GO' signal.

It converts to glutamine & is recycled back.

GABA acts as a shunt, to 'STOP' excess glutamate.

This Glutamate-Glutamine-GABA cycle is crucial to balance our mood, focus & sleep.

rxhometest.com/article/list...
January 27, 2026 at 5:44 AM
Mood, sleep, anxiety, inflammation, immunity are all linked through tryptophan.

Proteins digest in the gut & mostly covert to Kynurenine, a marker of inflammation & immunity.

A fraction converts to serotonin & melatonin, that controls mood, sleep & pain.

Learn more: rxhometest.com/article/list...
January 21, 2026 at 12:00 AM
January is cervical cancer awareness month.

Caused by HPV it is 4th biggest killer among women. In boys HPV causes cancer of neck and head.

Cancers from HPV are fully preventable with an FDA-approved vaccine (since 2006), given to teenagers at 11-18 years.

Palmer JNCI (2024) 10.1093/jnci/djad263
January 15, 2026 at 11:56 PM
Research shows neurotransmitters play important roles in our sleep.

For example, during REM sleep, when the brain is active but body is almost paralyzed, acetylcholine levels rise for vivid dreaming.

In general, most neurotransmitters levels are low during sleep.

rxhometest.com/product/neur...
January 9, 2026 at 6:56 PM
Happy New Year!
December 31, 2025 at 6:50 PM
'Tis the Season! of Family, Food...and Flu.

Let flu not ruin your holidays during this peak flu season.

Keep distance, cover your cough, and get vaccinated.

And make sure to get enough vitamin D.

Happy Holidays!

rxhometest.com/product/vita...

Source: www.cdc.gov/fluview/surv... #happyholidays
December 26, 2025 at 7:39 AM
The COMT gene is a methylation switch to control dopamine levels.

Depending on variants, response to neurotransmitters (e.g., dopamine, adrenaline, norepinephrine) can vary significantly.

It's easy to check COMT variants with an simple genetic swab test.
rxhometest.com/product/comt... #dopamine
December 10, 2025 at 10:05 AM
GABA (gama-aminobutyric acid) is one of the most well known neurotransmitters.

There's no single GABA, but several forms that can act instantly (e.g., for sedation), slowly (e.g., in muscle relaxation), or very specifically (e.g., in image formation in the eyes).

rxhometest.com/product/neur...
December 5, 2025 at 11:36 PM
Worried about Thanksgiving 'food coma'?

Belief: Tryptophan in turkey causes drowsiness & ultimately the food comma.

Not true. Turkey is no different.

Real reason: The heavy meals, alcohol & warm relaxed family environment that's the culprit.

Happy Thanksgiving!

rxhometest.com/product/neur...
November 26, 2025 at 8:39 PM
Optimal mental health requires optimal neurotransmitter levels.​

Any imbalance of neurotransmitters needs a careful understanding of how the brain & central nervous system work.​

The fundamental building blocks of our nervous system are neurons.​

Here's a look at the unique properties of neurons.
November 19, 2025 at 11:00 PM
Neurotransmitters can act as accelerators (like a gas pedal) or inhibitors (as breaks).

E.g., Glutamate accelerates clear thinking, learning, memory, perception.

GABA (gamma-amino-butyric acid) calm things down.

Imbalance of this combo can cause anxiety, mania, panic attacks. #neurotransmitters
November 8, 2025 at 6:23 AM
Our nerves communicate via electrical signals.....but also through chemical signals, called neurotransmitters.

First neurotransmitter (acetyl-choline) was discovered in 1921, in a dream.

A Nobel prize winning experiment showed chemicals from one frog could stimulate another frog's heart. #dopamine
October 31, 2025 at 6:05 PM
Mycoplasma genitalium causes STDs that are widespread but difficult to diagnose.

Survey of 6 US urban health clinics in 2020 showed 1-in-6 people were infected.

Because infections are not reportable & often show no symptoms, most remain unaware.

doi.org/10.1093/cid/...
October 25, 2025 at 5:02 AM
This month marks 20 years since Marshall & Warren received Nobel prize for proving H. pylori was causing certain stomach ulcers.

They faced strong backlash when the idea was first proposed in early 1980s.

Marshall drank a 'cocktail' of bacteria to prove his hypothesis. #hpylori #ulcers #stress
October 16, 2025 at 11:25 PM
Better hygiene has dramatically reduced H. pylori infections.

For example, data from Japan show a significant drop (from 68% to 5%) in people born within 75 years.

Helicobacter pylori bacteria are known to cause GI problems, e.g., peptic ulcer & gastric cancer.

www.nature.com/articles/s41...
October 9, 2025 at 4:24 AM
H. pylori bacteria can cause stomach ulcers.

They can survive the stomach acid, by making ammonia & neutralizing the acid.

Testing for ongoing infection:
- Breath test (13Carbon in urea)
- Stool test (actual bacteria)
- Biopsy & culture
- Blood test (antibodies)

rxhometest.com/product/h-py...
October 1, 2025 at 10:38 PM
Heart rate measurements are common.

But heart beat rate changes due to many factors: exercise, time-of-the day, season, gender, athleticism, age, etc.

Plot of 24-hour trend shows heart beats the slowest in morning, just at waking up.

Some athletes can be as low as 30 bpm.

doi.org/10.1371/jour...
September 17, 2025 at 8:57 PM
The papilloma virus (HPV) looks like a bucky ball with 72 pentagonal 'patches'.

HPV often causes skin bumps (papilloma) or 'acrochordons', a finger-like growth.

Over 175 varieties have been reported so far. Some are known to cause different forms of cancers.

rxhometest.com/product/huma...
September 10, 2025 at 7:58 PM
Theory of Emotions is a Way to Explain Emotions Using Neurotransmitters.

As in Theory of Colors (RGB), it Includes 3 Basic Emotions & Underlying Neurotransmitters:

- Dopamine (DA), e.g. for Joy
- Norepinephrine (NE) for Stress
- Serotonin (5-HT) for Sad

Ref: doi.org/10.3389/fpsy...
September 6, 2025 at 5:22 AM
Hormones vs Neurotransmitters

Both are important chemicals to send messages.

Neurotransmitters: fast, local (nerve-to-nerve, nerve-to-muscle).

Hormones: slower, long-distance (in the blood, move across the body).

But some act as both hormones & neurotransmitters.

rxhometest.com/product/neur...
August 29, 2025 at 7:32 PM
Most molds are not harmful to healthy humans.

In fact, some are used to make foods or medications, e.g., penicillin.

The 4 most common mycotoxins to humans are:
- ASPERGILLUS (grows on grains)
- PENICILLIUM (on rotting fruits)
- FUSARIUM
- TACHYBOTRYS (black mold)

rxhometest.com/product/myco...
August 19, 2025 at 6:31 PM
What Testosterone Therapy Can Or Can NOT Do For You?

Lessons From 7 Clinical Trials:

- Higher Bone Density
- Longer Walking Distances
- Better Mood
- Better Sexual Function
- Higher Hemoglobin, Lower Anemia

- May Raise PSA (Prostate)
- May Increase Artery Plaque & CVD

doi.org/10.1210/er.2...
August 13, 2025 at 3:44 PM