Posts by Dr. Susan Carter, MD: Endocrinologist & Longevity Expert

Dr. Susan Carter is an endocrinologist and longevity expert specializing in hormone balance, metabolism, and the aging process. She links low testosterone with thyroid and cortisol patterns and turns lab data into clear next steps. Patients appreciate her straightforward approach, preventive mindset, and calm, data-driven care.

Can Vitamin D impact testosterone?

Can Vitamin D impact testosterone?

Dr. Susan Carter, MD avatar
Dr. Susan Carter, MD: Endocrinologist & Longevity Expert
Oct 28, 2025 · 14 min read

Low testosterone and vitamin D deficiency often show up together in men, but they are not the same problem. Here is how low testosterone vitamin D patterns interact, when vitamin D can help, and when you still need to think beyond supplements. “When a man walks into my clinic with fatigue, low sex drive, and ...

Estrogen in men: Low Estradiol can ruin your TRT therapy

Estrogen in men: Low Estradiol can ruin your TRT therapy

Dr. Susan Carter, MD avatar
Dr. Susan Carter, MD: Endocrinologist & Longevity Expert
Oct 26, 2025 · 13 min read

Low estradiol in men is common, especially on testosterone therapy, and can quietly drain libido, mood, and bone strength. Here is how to recognize low estradiol, get the right tests, and correct it without crashing your hormones. “Men often think estrogen is the enemy, but low estradiol in men is just as harmful as high ...

Top 5 natural ways to increase testosterone

Top 5 natural ways to increase testosterone

Dr. Susan Carter, MD avatar
Dr. Susan Carter, MD: Endocrinologist & Longevity Expert
Oct 18, 2025 · 13 min read

Weight loss, better sleep, smarter training, stress control, and fixing silent medical problems are the top 5 natural ways to increase testosterone. Here is how they work and how to build a practical plan with lab numbers that actually mean something. “Start with the basics. Lose excess weight, protect your sleep, train your muscles, and ...

5 testosterone side effects you must be aware of

5 testosterone side effects you must be aware of

Dr. Susan Carter, MD avatar
Dr. Susan Carter, MD: Endocrinologist & Longevity Expert
Oct 14, 2025 · 15 min read

Testosterone replacement can boost strength, mood, and sex drive, but it also shifts blood pressure, blood thickness, fertility, skin, and sleep. Here’s how to recognize testosterone side effects early and work with your doctor to keep therapy safe and effective. “Testosterone side effects are usually predictable, not mysterious. If you track blood pressure, blood thickness, ...

Unexpected effects of testosterone therapy you should know

Unexpected effects of testosterone therapy you should know

Dr. Susan Carter, MD avatar
Dr. Susan Carter, MD: Endocrinologist & Longevity Expert
Aug 23, 2025 · 15 min read

Testosterone therapy can boost energy, muscle, and sex drive, but the most important risks are often the ones no one mentions. Here are the unexpected effects of testosterone therapy you should understand, monitor, and manage with your clinician. “Testosterone can be life-changing when used for the right person, at the right dose, and with the ...

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