I could agree with taxing cholesterol-laden basic ingredients.
Cigs and alcohol however are never necessary, whereas some prepackaged food, depending on the ingredients, might not be so bad now and then when you're busy, athletic equipment can make you fit if used properly, vehicles can be essential for some businesses (though I can support a gas tax and maybe tax on resources like metals), TV can sometimes be educational, dirt bikes use gas (refer to gas tax), BBQ can cook healthy food in some cases, computers are sometimes necessary for work (though I can agree to taxing non-renewable energy resources that might power my computer), and during vacations you'll probably still pay lots of gas tax for the flight there.
As for cigs and alcohol, they are never healthy, or in the rare cases where alcohol may be used for some medicinal purpose, we could exempt hospitals from paying taxes on alcohol. But otherwise when are they ever necessary. Big difference.