21/10/2026
Feeling tired, foggy, or lightheaded doesn’t automatically mean you just need more sleep. There are several different reasons these symptoms can show up, including:
- Low iron or nutrient deficiencies
- Thyroid dysfunction
- Blood sugar fluctuations
- Hormonal changes
- Chronic stress and cortisol changes
- Poor sleep quality
- Dehydration or electrolyte imbalance
- POTS or other forms of dysautonomia
The important part?
These issues can overlap, and the symptoms can look remarkably similar. That’s why the goal isn’t to guess which supplement you need. It’s to look at your symptoms, timing, health history, and appropriate testing to understand what may actually be contributing.