· By GUUDIES
Tired All the Time UK? The Supplements That Address the Most Common Causes
Persistent tiredness is one of the most common things GPs hear and one of the most likely to be explained away without proper investigation. Before you accept "probably just stress" as a diagnosis, here are the nutritional causes worth actually ruling out. Most are common, testable, and fixable.
Why Are You Tired All the Time Even With Enough Sleep?
Because sleep isn't the only variable in energy. Cellular energy production requires specific nutrients at every stage: iron for oxygen delivery, B12 for mitochondrial function, Vitamin D for metabolic processes, iodine for thyroid hormone synthesis, magnesium as a cofactor in hundreds of enzymatic reactions. Being deficient in any one of these creates fatigue that no amount of sleep resolves. In many UK adults, several of these are insufficient simultaneously.
Can Iron Deficiency Cause Constant Tiredness?
It's the most common nutritional cause of fatigue in UK women. Iron carries oxygen in red blood cells. Without enough, your cells are starved of oxygen regardless of how much you're breathing. The resulting fatigue is physical: heavy limbs, breathlessness, difficulty concentrating. Get a serum ferritin test, not just haemoglobin. Serum ferritin measures your actual stores and catches early-stage deficiency that haemoglobin misses.
Does Low Vitamin D Make You Tired?
Yes, and it's dramatically underdiagnosed as a fatigue cause. One in five UK adults is deficient. A meta-analysis in Nutrients confirmed Vitamin D supplementation reduced fatigue in deficient participants across all studies analysed. Our DailyGreens delivers Vitamin D at 200% NRV. See the formulation.
Does B12 Deficiency Cause Fatigue?
Definitively. The NHS explicitly lists fatigue and weakness among the primary symptoms. B12 is essential for red blood cell formation and neurological function. Our DailyGreens contains 24mcg of B12 per two-gummy serving, 200% NRV as methylcobalamin, the active form your body uses directly without any conversion step.
What We Think About the Energy Supplement Category
Most energy supplements are caffeine in a different format. They don't address why you're tired. They override the signal temporarily and then leave you back where you started, except now your adrenals have had another hit and your sleep tonight might be worse.
We built Guudies around addressing the actual causes. DailyGreens covers the nutritional deficiencies D, B12, iodine, iron co-factors that drive most UK adult fatigue. Our Mushroom Mix includes Cordyceps at 1000mg 20:1 extract, which supports mitochondrial ATP production without the cortisol spike. Six gummies total, each targeting a different system, no caffeine anywhere in the range.
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