Obviously, when governments these days say they care about us, we need to ask ourselves if there is a hidden motive.

Why are governments around the world so anti-smoking? Is it really because they care about our health? Or is it maybe linked to this?

Research paper

The control of parasitic nematodes impacting animal health relies on the use of broad spectrum anthelmintics. However, intensive use of these drugs has led to the selection of resistant parasites in livestock industry. In that respect, there is currently an urgent need for novel compounds able to control resistant parasites. Nicotine has also historically been used as a de-wormer but was removed from the market when modern anthelmintics became available.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6287576/

More research:

The following article is worth reading from beginning to end. I've copied only 2 parts of the text here:

The ancient coevolutionary relationship between vertebrates and helminths (parasitic worms) has potentially profound implications for human health. The fundamental structure and control of the immune system were likely shaped by vertebrate-helminth coevolution, for instance, and the evolutionarily novel absence of helminth infections in many populations might therefore be responsible for the increasing prevalence of allergic and autoimmune diseases (the hygiene hypothesis) (Jackson, Friberg, Little, & Bradley, 2009).

....

In humans, there is a large literature on the deliberate use of plants for medicinal purposes (ethnomedicine). In addition, there is increasing evidence that the plants that are incorporated into many diets provide protection against parasites (Etkin, 1986, Etkin and Ross, 1991).

https://www.sciencedirect.com/science/article/abs/pii/S1090513814000567

And one last article:

12 Unexpected Nicotine Health Benefits

I've copied some of the most interesting ones:

Possess Neuroprotective Properties

Some scientists claim that nicotine may help protect neurons from degeneration through its ability to affect stimulation of nicotinic acetylcholine receptors and reduce estrogen levels. A 2012 study indicates that nicotine has protective properties in animals' brains.

Treat Schizophrenia

Schizophrenia presents with cognitive problems which may be improved by use of nicotine. The result is improved memory, better learning ability and other functions. It is believed that many schizophrenics use nicotine to reduce the effects of the condition by improving their mental stability.

Control Alzheimer’s Disease

Researches into the ability of nicotine to enhance brain function have been going on for a long time. They follow indications that nicotine could be helpful in reducing the effects of Alzheimer’s. Nicotine is believed to give encouraging results in the improvement of mental functions including attention, vigilance and recognition in persons with Alzheimer’s.

https://www.newhealthadvisor.org/positive-effects-of-nicotine.html