When the Heat of the Day and Adrenal Insufficiency Take Their Toll

One of the most frustrating things about living with adrenal insufficiency is that it is largely invisible. From the outside, people may see someone who looks perfectly well. What they don’t see is the daily battle taking place beneath the surface, especially when the weather turns warm.

Most people feel a little tired after spending time in the heat. For those of us with adrenal insufficiency, the effects can be far more significant.

Our bodies rely on cortisol to help us respond to physical stress. Heat places additional demands on the body, requiring us to regulate temperature, maintain blood pressure and manage fluid balance. When cortisol levels cannot rise naturally to meet these demands, even a normal summer’s day can become a challenge.

3pm – all you want is tea and bed!

By the middle of a hot afternoon, it can feel as though someone has quietly removed the batteries from your body.

The Physical Impact

The symptoms can arrive gradually or all at once. Fatigue becomes overwhelming rather than ordinary tiredness. Legs feel heavy. Walking up a hill or climbing a flight of stairs can seem disproportionately difficult. Dizziness, headaches and muscle weakness are common companions.

Sometimes it feels as though every movement requires conscious effort. Tasks that would normally be routine suddenly demand planning, pacing and recovery time.

Hydration becomes especially important. Heat increases fluid loss through sweating, and dehydration can quickly worsen symptoms. What might be a minor inconvenience for someone else can leave a person with adrenal insufficiency feeling completely drained.

The Mental Impact

Brain Fog is a funny thing – sometimes words just escape you. In

The physical symptoms are only part of the story.

Heat and adrenal insufficiency can create a mental fog that is difficult to explain to others. Concentration slips away. Words don’t come as easily. Conversations require more effort. Decisions that would normally take seconds can take minutes.

There can also be an emotional impact. Feeling exhausted before the day is over can be frustrating. Plans may need to change. Activities may need to be abandoned. Independence can feel compromised.

Many people experience irritability, anxiety or low mood, not because they are giving up, but because their body is struggling to keep pace with their ambitions.

The Challenge of Adjustment

Perhaps the hardest part is accepting new limitations.

Many of us remember what we used to be capable of. We compare today’s performance with yesterday’s achievements. For me, having faced stage 4 melanoma, multiple surgeries, immunotherapy and even standing on the summit of Kilimanjaro, it can be difficult to accept that a warm day can sometimes stop me in my tracks.

The mind still wants to push forward. The body, however, has other ideas.

Learning to respect those limits is not surrender. It is adaptation. It is understanding that strength is not always measured by how much we can do, but by how wisely we manage our energy.

Being Kind to Yourself

Living with adrenal insufficiency requires a different approach to life. It means planning ahead, staying hydrated, recognising warning signs and understanding when rest is necessary.

Most importantly, it means showing yourself the same compassion you would offer to someone else facing the same challenges.

If the heat of the day leaves you feeling exhausted, weak or mentally drained, remember that these feelings are real. They are not a lack of effort, determination or resilience. They are the result of a body working harder than most people realise.

Some days the greatest achievement is simply getting through the day safely and sensibly.

And that is enough – it’s very difficult to cope with the mind games of Addisons. Your head is telling you that you can do things that you did not too long ago. Your body however, well that’s another story. That’s the bit that hurts – physically, mentally and emotionally.

To all those reading this that are dealing with Addisons. Keep your spirits up and remember the “Sick Day Rules”

One of the most frustrating things about living with adrenal insufficiency is that it is largely invisible. From the outside, people may see someone who looks perfectly well. What they don’t see is the daily battle taking place beneath the surface, especially when the weather turns warm.

Most people feel a little tired after spending time in the heat. For those of us with adrenal insufficiency, the effects can be far more significant.

Our bodies rely on cortisol to help us respond to physical stress. Heat places additional demands on the body, requiring us to regulate temperature, maintain blood pressure and manage fluid balance. When cortisol levels cannot rise naturally to meet these demands, even a normal summer’s day can become a challenge.

3pm – all you want is tea and bed!

By the middle of a hot afternoon, it can feel as though someone has quietly removed the batteries from your body.

The Physical Impact

The symptoms can arrive gradually or all at once. Fatigue becomes overwhelming rather than ordinary tiredness. Legs feel heavy. Walking up a hill or climbing a flight of stairs can seem disproportionately difficult. Dizziness, headaches and muscle weakness are common companions.

Sometimes it feels as though every movement requires conscious effort. Tasks that would normally be routine suddenly demand planning, pacing and recovery time.

Hydration becomes especially important. Heat increases fluid loss through sweating, and dehydration can quickly worsen symptoms. What might be a minor inconvenience for someone else can leave a person with adrenal insufficiency feeling completely drained.

The Mental Impact

Brain Fog is a funny thing – sometimes words just escape you. In

The physical symptoms are only part of the story.

Heat and adrenal insufficiency can create a mental fog that is difficult to explain to others. Concentration slips away. Words don’t come as easily. Conversations require more effort. Decisions that would normally take seconds can take minutes.

There can also be an emotional impact. Feeling exhausted before the day is over can be frustrating. Plans may need to change. Activities may need to be abandoned. Independence can feel compromised.

Many people experience irritability, anxiety or low mood, not because they are giving up, but because their body is struggling to keep pace with their ambitions.

The Challenge of Adjustment

Perhaps the hardest part is accepting new limitations.

Many of us remember what we used to be capable of. We compare today’s performance with yesterday’s achievements. For me, having faced stage 4 melanoma, multiple surgeries, immunotherapy and even standing on the summit of Kilimanjaro, it can be difficult to accept that a warm day can sometimes stop me in my tracks.

The mind still wants to push forward. The body, however, has other ideas.

Learning to respect those limits is not surrender. It is adaptation. It is understanding that strength is not always measured by how much we can do, but by how wisely we manage our energy.

Being Kind to Yourself

Living with adrenal insufficiency requires a different approach to life. It means planning ahead, staying hydrated, recognising warning signs and understanding when rest is necessary.

Most importantly, it means showing yourself the same compassion you would offer to someone else facing the same challenges.

If the heat of the day leaves you feeling exhausted, weak or mentally drained, remember that these feelings are real. They are not a lack of effort, determination or resilience. They are the result of a body working harder than most people realise.

Some days the greatest achievement is simply getting through the day safely and sensibly.

And that is enough – it’s very difficult to cope with the mind games of Addisons. Your head is telling you that you can do things that you did not too long ago. Your body however, well that’s another story. That’s the bit that hurts – physically, mentally and emotionally.

To all those reading this that are dealing with Addisons. Keep your spirits up and remember the “Sick Day Rules”


Comments and questions are always welcome. Please feel free to add yours.