Men's Health
Low Energy After 40: Common Contributors
October 7, 2026 Vitality Medicine RX Editorial Team
Low energy after 40 is common, and it is usually multifactorial: hormones, thyroid, sleep quality, nutrient levels, metabolic health and stress all play a role. An evaluation can identify which factors apply to you. Vitality Medicine RX offers nurse practitioner-led telehealth evaluation for low energy in states where Dr. Miklos Major II, Sc.D., DNP, NP-BC, FAAMFM holds an active license.
Common contributors
- Hormone changes, including low testosterone
- Thyroid conditions
- Sleep disorders such as sleep apnea
- Iron, vitamin D or B12 deficiency
- Insulin resistance and metabolic drift
- Chronic stress and burnout
How it is evaluated
Evaluation includes a detailed history, medication review and labs: complete blood count, iron studies, thyroid panel, vitamin D and B12, metabolic panel, glucose, A1C and hormone markers as appropriate.
What this means for you
There is rarely a single cause of low energy. The goal is to identify the factors that are relevant for you and address them in order of importance.
When to talk to a clinician
If low energy is affecting your daily life, book a discovery call to confirm we can see you in your state and to outline the evaluation steps.
Sources
Related Pages
Talk to a Clinician
This article is educational and does not replace individualized medical advice. If you have questions about your own health, book a discovery call with Vitality Medicine RX. Your care is led by Dr. Miklos Major II, Sc.D., DNP, NP-BC, FAAMFM, a Doctor of Nursing Practice (DNP) and Doctor of Science (Sc.D.), board-certified nurse practitioner (NP-BC). Care is available in states where he holds an active license.
Book a Discovery CallQuestions About This Topic
Why is my energy lower after 40?
Energy depends on hormones, thyroid, sleep, nutrients, metabolic health and stress, all of which can shift after 40. Evaluation identifies the factors that apply to you.
What labs are used?
Testing may include a complete blood count, iron studies, thyroid panel, vitamin D and B12, metabolic panel, glucose, A1C and hormone markers as appropriate.
Is low energy just part of aging?
Some changes are common, but many contributors are treatable. Low energy is not something you simply have to accept.
How do I get started?
Book a discovery call. We will confirm your state, review your symptoms and history, and outline the next steps.
Last updated 2026-10-07.