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I believe there are downsides only if you are drinking too much caffeine or if it is in conflict with one of your medications or existing health conditions, afaik.

Healthline weighs the pros and very few cons of caffeine.

this is my impression as well regarding nicotine. however, i have noticed people are not interested in examining that and continue to conflate nicotine with cigarettes (high risk) and vaping (misconstrued risk).

i also believe many view a nicotine addiction through a sort of moral lens they don't apply so readily to caffeine.

Nicotine is worse.

Nicotine is one of the most toxic of all poisons and has a rapid onset of action. Apart from local actions, the target organs are the peripheral and central nervous systems. In severe poisoning, there are tremors, prostration, cyanosis, dypnoea, convulsion, progression to collapse and coma. Even death may occur from paralysis of respiratory muscles and/or central respiratory failure with a LD50 in adults of around 30-60 mg of nicotine. In children the LD50 is around 10 mg.

The LD50 of caffine is over 100 mg per kg. That's not just a dosage difference, either. Nicotine gum comes in 2-6 mg doses - chewing 5 pieces of extra-strength gum can bring you up to the LD50.

Drinking 5 celsius drinks - one of the strongest (and most maliciously marketed) energy drinks - at 200mg per can doesn't bring you even close to the LD50 of caffeine.

Nicotine is:

• More toxic
• More carcinogenic
• More addictive
• AND the addiction is heritable.

This in turn reinforces the addiction by inducing craving. This effect has been shown to affect the CYP2A6 gene and leads to heritable dependence to nicotine. Studies have shown the nicotine dependence to be transmitted maternally and grand maternally by epigenetic mechanism.

You can be genetically susceptible to nicotine addiction because your grandmother smoked cigarrettes. Not because she herself was genetically susceptible - no, literally just because she smoked. And the same effect would occur if your grandmother only used tobacco-free nicotine products.

Congrats kids, welcome to the new generation of Big Tobacco influencing society to think it's okay. History sure does rhyme.

Nicotine in pretty much any amount is cardiotoxic, caffeine (in moderate amounts) is pretty much neutral afaik. They both may or may not be carcinogens depending on the study. Thats pretty much it I think

When you say speed, do you mean Tina that bish?

Yeah, nicotine too. Pretty much any stimulant. ADHD is thought to be caused by low dopamine, and exercise is thought to alleviate symptoms by producing dopamine. I know doctors reccomend strength training and aerobic exercises like running or swimming, but I don't know how hiking stacks up. If it's strenuous enough that you feel tired by the end, I'm sure it's helping.

Anyway, everyone's different. For me, if I don't run at least a 5K 3 times a week, my symptoms are terrible, but strength training doesn't seem to help much.

I'm talking about suicidal thoughts at least a month up to several months after not having any nicotine, so it seems unlikely to be withdrawal symptoms.

Stimulants help with ADD symptoms, this is simply a fact.

To widen the anecdotal data set, I have ADHD and have been using nicotine since I was 16 (29 now). I quit for ~8 months a few years back by making my own vape juice and tapering my nicotine dose down over a period of several months. I never experienced withdrawal symptoms, but my mental health tanked on lower doses and it got even worse when I was completely off nicotine. I was way more irritable, impatient, scatterbrained, and depressed. It was not fun