Those who say that fat is harmful to the body might use the analogy of alcohol – the body metabolizes fat as a fuel and suffers the toxicity of doing so, just as the body does with alcohol.
The differences are:
- There are at least 2 essential fats – there is no essentiality to alcohol.
- There are likely more conditionally essential fats (the two major fish oils and arachidonic acid come to mind; perhaps palmitoleic acid as well), different ones in different people, and the body is actively looking for them. There is no conditional essentiality to alcohol.
- All fats help essential fats be absorbed as well as useful fat-soluble substances, which are not limited to the four fat-soluble vitamins; it would be a real stretch to say that alcohol does the same.