Understanding a Semen Analysis: Sperm Count, Motility & Morphology Explained
Male fertility contributes to approximately 50% of infertility cases, yet sperm health is often overlooked until a couple has already spent months (or even years) trying to conceive.
In this video, fertility specialist Dr. Natalie Crawford explains what a semen analysis actually measures, how sperm are produced, and why lifestyle changes can significantly impact sperm quality in as little as 90 days.
How to Improve Sperm Quality Naturally in 90 Days
Timestamps:
00:00 Sperm Motility & Morphology Explained
00:35 How Sperm Are Made: The 90-Day Sperm Lifecycle
01:40 How Lifestyle Changes Can Improve Sperm Quality
02:10 What a Semen Analysis Measures
02:30 Normal Sperm Count: What Sperm Concentration Means
02:55 Testosterone and Fertility: Why Testosterone Can Lower Sperm Count
03:45 Cannabis Use and Male Fertility
04:00 Why Sperm Count Matters for Conception
04:20 Low Sperm Motility: Common Causes & Risk Factors
05:05 Heat Exposure, Hot Tubs & Sperm Health
05:45 What Sperm Morphology Really Means
06:15 How to Improve Sperm Quality Naturally
06:50 Best Supplements for Male Fertility
07:15 Foods, Exercise & Lifestyle Changes for Better Sperm
07:40 Alcohol, Nicotine & Other Fertility Risk Factors
07:50 Does Cooling the Testes Improve Sperm Quality?
08:15 What Is Sperm DNA Fragmentation?
08:50 Should You Get a Semen Analysis Before Trying to Conceive?
09:20 Total Motile Sperm Count (TMSC) Explained
09:40 When IUI or IVF May Be Recommended
10:00 Male Fertility Is Half the Fertility Equation
Sperm Are Constantly Being Made
Unlike eggs, which women are born with, sperm are produced continuously throughout a man's life.
In fact, approximately 1,500 sperm are created every second. From development to ejaculation, the process takes about 90 days, which means the sperm present today reflect the choices, habits, and environment of the previous three months.
This also means that positive lifestyle changes can improve sperm quality surprisingly quickly.
What Does a Semen Analysis Measure?
A semen analysis evaluates several important aspects of sperm health, including:
Sperm concentration (count)
Motility (movement)
Morphology (shape)
Total motile sperm count (TMSC)
These values help fertility specialists understand not only how many sperm are present, but how well they function and whether there may be underlying hormonal or lifestyle-related factors affecting fertility.
Sperm Count and Hormonal Health
Sperm concentration provides insight into the communication between the brain and the testes.
When sperm counts are low, it may indicate that hormonal signals responsible for sperm production are not functioning optimally.
One of the most common reversible causes Dr. Crawford sees is testosterone therapy. While many men take testosterone to improve energy, muscle mass, or symptoms of low testosterone, supplemental testosterone can actually suppress sperm production and significantly lower fertility potential.
Cannabis use may also negatively impact sperm concentration by interfering with the hormonal signals involved in sperm production.
Why Motility Matters
Motility refers to how well sperm move.
Because sperm must travel through the reproductive tract and ultimately reach an egg, movement is critical for successful fertilization.
Low motility is often linked to lifestyle and environmental factors, including:
Chronic stress
Insulin resistance
Cannabis use
Heavy alcohol consumption
Nicotine and vaping
Inflammation
Heat exposure
Many of these factors can be modified, making motility one of the most actionable areas for fertility improvement.
Understanding Sperm Morphology
Morphology refers to the shape and structure of sperm.
Abnormal morphology does not necessarily mean the sperm are genetically abnormal. Instead, it evaluates physical characteristics such as the size and shape of the sperm head and tail.
Poor morphology is often associated with inflammation and an unhealthy sperm environment, making it another important clue when evaluating overall reproductive health.
How to Improve Sperm Quality
Because sperm are so responsive to their environment, lifestyle changes can have a meaningful impact on fertility.
Dr. Crawford recommends focusing on:
Eating plenty of fruits and vegetables
Increasing fiber and antioxidant intake
Choosing healthy fats such as olive oil, nuts, seeds, and avocados
Staying hydrated
Building muscle through regular exercise
Improving sleep quality
Reducing stress
She also discusses supplements commonly used to support male fertility, including:
CoQ10 (200 mg daily)
Vitamin C (1,000 mg daily)
L-carnitine (1 gram daily)
A high-quality multivitamin
Heat Exposure and Sperm Health
The testes are located outside the body for a reason: sperm develop best at temperatures slightly below normal body temperature.
Frequent heat exposure may negatively impact sperm quality.
Examples include:
Hot tubs
Saunas
Laptops placed directly on the lap
Prolonged cycling
If improving sperm quality is a priority, reducing heat exposure may be beneficial.
What Is Sperm DNA Fragmentation?
Sperm DNA fragmentation testing evaluates damage to sperm DNA caused by oxidative stress.
While this test remains somewhat controversial, it can provide additional information in certain situations, including:
Male factor infertility
Recurrent pregnancy loss
Unexplained infertility
Results may help guide treatment decisions and identify areas where lifestyle changes could improve sperm health.
Total Motile Sperm Count (TMSC)
One of the most important fertility metrics is Total Motile Sperm Count (TMSC), which combines sperm volume, concentration, and motility into a single measurement.
Dr. Crawford generally looks for:
Around 40 million motile sperm for optimal chances with natural conception
Approximately 20 million motile sperm for IUI candidates after sperm processing
Lower numbers may indicate that IVF should be considered
Don't Wait to Check Sperm Health
One of Dr. Crawford's strongest recommendations is simple: get a semen analysis before trying to conceive whenever possible.
A semen analysis is relatively inexpensive, easy to obtain, and can identify issues long before a couple reaches the point of infertility testing.
Because sperm quality can often be improved through targeted lifestyle changes, earlier testing creates more opportunities to optimize fertility outcomes.
Watch the Full Video
In this video, Dr. Crawford explains how sperm are produced, what semen analysis results mean, the most common causes of low sperm count and motility, and practical steps men can take to improve fertility naturally.
Watch the full video above to learn how sperm health influences fertility and what you can do to support the healthiest sperm possible.