I can do a 15-20 minute walk with no problem but about 2 hours later I feel extreme fatigue. I then usually go for a thirty-minute nap and after 2-3 hours of rest, I am back to normal. I should mention I am 79 years of age, diabetic, and had a long episode of an elevated heart pulse this summer. My readings have been all normal for the last three months. What could be causing the fatigue?
It would be difficult to comment on the situation without a detailed clinical evaluation. Possible causes include lack of adequate diet, micronutrient deficiency, abrupt increase in work activity, uncontrolled blood sugar levels, infections, other systemic issues etc. I would suggest beginning with adequate diet and strict control of blood sugar levels. It is necessary to monitor blood sugar levels since sudden activity may increase the sugar requirement. Also one should increase the exercise level gradually. If these changes do not seem to help, you may consider an evaluation by a primary care physician to consider other possibilities and appropriate management.
Hope this is helpful.
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