Do Testosterone Levels Affect Baby Gender?

I sometimes hear from women are concerned that their partner or husband has lower testosterone and therefore won’t be able to produce the gender of their choice. This can be especially concerning if the couple want a boy baby. Someone might say: “my husband and I have been trying to conceive for over a year. We have not been successful. I admit that we’ve been under stress with moving and job changes. So my doctor told us not to worry and that the stress may have affected conception, but that we are both young and healthy, so we should eventually conceive. Well, I am a worrier, so I had my husband get a check up. Everything was relatively normal. But when I looked over my husband’s test results, I noticed that his testosterone level was on the low end of the range. His doctor said that they were within normal ranges and should not affect my ability to become pregnant. However, there’s no denying that the number was not on the high end of what the paperwork showed. Assuming that his testosterone is a little low, does this mean that I won’t be able to have a boy?”

There have been a few clinical studies that have suggested VERY SLIGHT influences from both the father and the mother’s testosterone levels. For example, there’s a correlation with men who have prostate cancer (and therefore higher testosterone levels) and producing slightly more male children. There has also been noted a correlation between joggers (who can have lower testosterone due to the exercise) and producing slightly more girl children. However, it’s very important to note that the differences in gender are extremely slight.

Not only that, but the mother’s testosterone levels can also influence baby gender. A clinical study found that mother’s with higher testosterone levels were slightly more likely to have sons. So, I guess an appropriate question would be: do you know your own testosterone levels? Because if yours were high and your husbands were low (although being on the lower end of a normal range doesn’t necessarily mean “low,”) then this might average out. Also, it’s important to note that the baby gender bias as it related to the mother and father’s testosterone level was statistically pretty low. There was a correlation, but not one that was extremely statistically high or significant.

There are other things besides testosterone that come into play. The woman’s vaginal PH, the timing of the conception, and the sexual positions used can all affect the life span and the trajectory of the sperm. And these things CAN affect baby gender. It takes a Y sperm chromosomes to create a boy and an X to create a girl baby. The two sperm chromosomes behave differently. X are slow but hardy. Y are fast but vulnerable. That’s why when you manipulate timing, PH, and positioning, you manipulate which chromosome gets to the egg first. In my opinion, this can influence baby gender more than slight fluctuations in testosterone. Since your husband’s levels were within normal ranges and you don’t know your own level, I would worry more about timing, PH, and positioning, since these are things that you can control and you can use them together to increase your chances of success. But this is only one layperson’s opinion.

I’ve put together a couple of free websites to help explain how these three variables work together.  If you’d like a girl baby, see If you want a boy baby, see