Nobody really cares about a rat’s testicles.
But most men care a lot about their own testicles.
In this newsletter, we explore the effects of bad fats on testicles and testosterone.
Warning: this will make you question everything you have read in the mass media — most of which is completely WRONG.
They gave different fats to different groups of rats.
They soybean, olive, coconut, and grapeseed oils for the fats.
Soybean oil is the most common oil that we consume.
Soybean oil is commonly what we call vegetable oil.
And it’s found in just about every prepared food, every bottled salad dressing, and mayonnaise.
Anything that you get in a fast food restaurant or the supermarket prepared food section is going to contain soybean/vegetable oil.
Plus, it’s used for potato chips, corn chips, Doritos, anything fried, etc.
It’s pretty much impossible to avoid it without avoiding processed foods.
So isn’t it good to know what the effects of this oil are on our testosterone and our testicles?
It kinda sucks if you eat a lot of vegetable oil.
If the results of this rat study are correlated to the relative quantities for humans, your testosterone will be MUCH lower.
It will be lower if you eat anything with industrial oils — the so-called “food oils.”
These are oils including cottonseed oil, peanut oil, safflower oil, sunflower seed oil, and corn oil.
Vegetable oils like these are called PUFAs, which stands for polyunsaturated fatty acids.
They are found in all of these oils.
Olive oil is about 15% PUFA, which is a huge improvement.
But coconut oil is only 3% PUFAs!
Taking into account all these previous results, it is likely that both excessive PUFA and/or MUFA [monounsaturated fatty acids] may be deleterious for testosterone production.
Indeed, if you’re going to consume fat, you would best avoid all these PUFAs.
It’s much better just to go for good saturated fat, especially coconut oil, or fat from animals, such as butter.
To be very blunt about it, the study authors explain:
PUFA diets appear to depress Leydig cell function.
Leydig cells produce testosterone.
So you don’t want them depressed, do you?
And it also gets interesting here:
In the past decades, a progressively significant worldwide decline in semen quality and androgenic performance was reported.
Could this be because of the increase in consumption of PUFAs?
As proof for the consumption hypothesis, we get fatter and fatter.
Our body mass index rises.
And although it’s not shown in this chart below, our testosterone falls, and our semen quality declines.
Maybe it’s time we stopped eating all those vegetable oils.
Maybe it’s time we stop listening to the idiots that got us into this mess in the first place — the American Heart Association.
The AHA gave their ill-founded and wrongheaded recommendation that we all consume more unsaturated fats.
What idiotic advice.