CATEGORY: MEN’S HEALTH
Testosterone is usually talked about in terms of energy, muscle, and sex drive — but your level may also be a window into your overall health. A large 2024 analysis pooling data from 24,109 men found that those with low testosterone had a measurably higher risk of dying over the following years, suggesting that a simple blood test can flag risk well before serious disease shows up.1
What the Researchers Did
This was an individual-participant-data meta-analysis — a rigorous approach that combines the raw data from many studies rather than just their summaries. Researchers pulled together 11 prospective cohort studies of community-dwelling men from Australia, Europe, and North America, following them for at least 5 years each (more than 255,000 person-years of data in total). Crucially, hormone levels were measured with mass spectrometry, the most accurate laboratory method, which makes the findings more reliable than older studies using less precise tests.1
The Thresholds That Mattered
Two specific cutoffs stood out. Men whose baseline testosterone was below 213 nanograms per deciliter (a standard blood-test unit) had a higher risk of death from any cause, regardless of other hormone levels. And men below 153 nanograms per deciliter had a higher risk of dying specifically from cardiovascular (heart and blood vessel) disease. These associations held even after accounting for age, weight, smoking, blood pressure, diabetes, and cholesterol — meaning low testosterone added information beyond the usual risk factors.1
What This Does — and Doesn’t — Mean
This is an association, not proof that low testosterone directly causes earlier death, and it does not show that taking testosterone reverses the risk. Low levels may instead be a signal of underlying problems — obesity, poor metabolic health, or chronic illness — that themselves drive risk. Think of it like a smoke detector: a low reading is a reason to look closely at your health, not automatically a reason to start a hormone. The value lies in early information.
Why It Often Goes Unchecked
Despite this, testosterone is not part of routine checkups for most men, so the signal frequently goes unnoticed until symptoms or disease appear. Common signs that may justify testing include persistent fatigue, low libido, loss of muscle or bone strength, depressed mood, and difficulty concentrating — especially alongside conditions like obesity or type 2 diabetes.
Key Takeaways
- A low testosterone reading is a meaningful health signal, not just a sex-drive issue — in this analysis, it predicted higher all-cause mortality below about 213 ng/dL and higher cardiovascular death below about 153 ng/dL.
- In this analysis, a low result was best read as a prompt to evaluate overall health (weight, blood sugar, blood pressure, cholesterol) rather than an automatic reason to start testosterone.
- If you have symptoms like ongoing fatigue, low libido, or loss of strength — particularly with obesity or diabetes — ask your healthcare provider whether a testosterone test makes sense.
- Any decision about treatment should be made with your provider, weighing your symptoms, levels, and overall risk together.
References
- Yeap BB, Marriott RJ, Dwivedi G, et al. Associations of testosterone and related hormones with all-cause and cardiovascular mortality and incident cardiovascular disease in men: individual participant data meta-analyses. Ann Intern Med. 2024 Jun;177(6):768-781. link