A hormone produced by the adrenal glands that naturally declines with age. It acts as a precursor to sex hormones including testosterone and oestrogen, and plays a role in energy, mood, and hormone balance. Declining levels are a natural part of ageing and may contribute to changes in vitality and wellbeing.

Primary source of energy for the body; key for assessing diabetes risk.

Reflects average blood sugar over the past 2–3 months.

Vital for bones, teeth, muscles, and nerve function.

Adjusted calcium level accounting for protein in your blood; gives a more accurate picture of calcium status.

The body's primary stress hormone, produced by the adrenal glands. Chronically elevated levels, often driven by prolonged stress, are associated with weight gain around the abdomen, disrupted sleep, and reduced immune function. Low cortisol may indicate adrenal insufficiency and should be investigated by a doctor.