Data suggest that Black men have lower mean ejaculate volumes, sperm concentration, and total motile sperm counts.
The highest fertility levels are observed in Niger (13.6 children on average), South Sudan (13.5 children), Chad (12.1 children) and in the Sahelian countries more generally. In only four countries (South Africa, Botswana, Lesotho and Namibia) is male fertility below 6 children per man.
Semen Quality and Male Infertility
The sperm count in white and cloudy semen is better than watery and clear semen. Watery semen may sometimes be considered as an indicator of fertility issues in males. In most cases, clear semen is indicative of a transient problem that may resolve spontaneously.
Studies of fertile and subfertile populations have reported lower semen quality among African Americans (Glazer et al., 2018; Redmon et al., 2013), and from 2006–2010 slightly higher percentages of non-Hispanic Black men reported infertility compared to men of other racial groups in nationally representative samples ( ...
Another study that evaluated the relationship between age and semen parameters also concluded that male fertility decline begins at 35, and suggested that male fertility peaks between 30 and 35. Bottom line: Men generally see a decrease in fertility beginning at 35, and the decline progresses from there.
Male fertility generally starts to reduce around age 40 to 45 years when sperm quality decreases. Increasing male age reduces the overall chances of pregnancy and increases time to pregnancy (the number of menstrual cycles it takes to become pregnant) and the risk of miscarriage and fetal death.
Fertility is most likely if the semen discharged in a single ejaculation (ejaculate) contains at least 15 million sperm per milliliter. Too little sperm in an ejaculation might make it more difficult to get pregnant because there are fewer candidates available to fertilize the egg.
Glazer et al also demonstrated that Asians had the highest sperm concentrations and Blacks the lowest, similar to our data.
The fertility rate in the United States in 2020 was 56.0 per 1,000 women ages 15-44. Of all live births in the United States during 2018-2020 (average), 23.7% were Hispanic, 52.1% were white, 15.2% were black, 0.8% were American Indian/Alaska Native and 6.8% were Asian/Pacific Islander.
Results: White men produced greater volumes of semen on average, however, Asian men had higher sperm concentrations and total sperm count.
Yellow semen may also indicate urine in the semen. This can be an issue that requires attention from a fertility specialist, as it may indicate infertility. Pink or reddish-brown semen suggests that you may have some bleeding from or inflammation of your prostate.
The concentration of sperm is what makes the semen cloudy and thick, so if your ejaculate is watery it is possible that you have a low sperm count. This doesn't mean you're infertile (so precautions to prevent pregnancy still need to be taken for couples that don't want to get pregnant).
Semen is normally a whitish-gray color. Changes in semen color might be temporary and harmless or a sign of an underlying condition that requires further evaluation. Possible causes, by color, include: Red semen.
Sperm and Semen Analysis
A trained expert checks your sperm count, their shape, movement, and other characteristics. In general, if you have a higher number of normal-shaped sperm, it means you have higher fertility.
The fertility rate in the United States in 2020 was 56.0 per 1,000 women ages 15-44. Of all live births in the United States during 2018-2020 (average), 23.7% were Hispanic, 52.1% were white, 15.2% were black, 0.8% were American Indian/Alaska Native and 6.8% were Asian/Pacific Islander.
Asian and Native Americans have the lowest twinning rates. Caucasian women, especially those over age 35, have the highest rate of higher-order multiple births (triplets or more).
It's true that fertility is genetic, and there actually are some people who can be classified as “super” fertile. This is all dependent on sperm and egg health. One study on the topic classified super fertility as having a monthly fecundity rate (the ability to get pregnant) of 60% or greater.
Y sperm: are faster but survive for less time in the female genital tract. X sperm: are slower, but they are more resistant and therefore survive longer.
When it comes to sperm meeting eggs in sexual reproduction, conventional wisdom holds that the fastest swimming sperm are most likely to succeed in their quest to fertilize eggs.
The Y chromosome, which makes boys, contains less DNA than the X chromosome for girls. That means sperm that bear a Y chromosome swim faster in viscous liquids.
Male infertility can be caused by low sperm production, abnormal sperm function or blockages that prevent the delivery of sperm. Illnesses, injuries, chronic health problems, lifestyle choices and other factors may contribute to male infertility.
Obesity, too much alcohol, and smoking cigarettes all negatively affect sperm count and overall sperm health. So does stress. In fact, stress can actually cause sperm abnormalities and lower sperm concentration.
excessive alcohol consumption, smoking and using drugs such as marijuana or cocaine. certain medications, including testosterone replacement therapy, long-term anabolic steroid use, cancer medications (chemotherapy), some antibiotics and some antidepressants. being overweight or obese.
For healthy semen samples collected between 5:00am and 7:30am were found to exhibit a statistically higher sperm concentration, total sperm count and a higher percentage of normally shaped sperm, compared to samples produced later in the day.
Even if everything does appear normal and healthy on the surface, you can't really tell whether your sperm is healthy just by looking at it. Scheduling an appointment with your healthcare provider to perform a semen analysis is the only way to find out for sure.