His chronicle of his trip, The naturalist on the River Amazons, became a bestseller when it was published in 1863.
Hot flashes and nausea are most commonly caused by hormonal imbalances in the body, most notably, by sex hormones. For women, a decrease in estrogen is often to blame, whereas in men, testosterone deficiency can create the problem. Sometimes, the symptoms occur for reasons not related to those hormones at all.
Estrogen changes: A drop in estrogen, one of the female hormones, has been shown to be the cause of hot flashes of perimenopause.Hot flashes can also be caused by thyroid imbalances, drug interactions, and of course spicy foods. ...