Are all unhealthy substances haraam?

In Islamic dietary laws, not all unhealthy substances are considered haram (forbidden). The Qur'an specifies certain foods that are explicitly prohibited. For example, in Surah Al-Baqara, it states: He hath forbidden you only carrion, and blood, and swineflesh, and that which hath been immolated to (the name of) any other than Allah. But he who is driven by necessity, neither craving nor transgressing, it is no sin for him. Lo! Allah is Forgiving, Merciful. 2:173. This verse indicates that the prohibition is specifically for these items, and that in cases of necessity, one may consume them without sin.

Moreover, the Qur'an does not classify all unhealthy substances as haram. Instead, it emphasizes the importance of intention and necessity. For example, if a person finds themselves in a situation where they must consume something that is otherwise forbidden due to extreme hunger or necessity, they are allowed to do so, provided they do not crave it or exceed what is necessary.

Additionally, various hadith also support the idea that not every unhealthy substance is automatically forbidden. The Prophet Muhammad ﷺ taught that Every intoxicating substance is prohibited; whatever causes intoxication in full measure is forbidden, even a handful of it. Sunan al-Tirmidhi 26:6SunniSahih (per Al-Albani). This highlights that while certain substances are categorized as harmful or intoxicating, the broader category of "unhealthy" does not universally apply to all items as being haram.

In summary, the Qur'an and the teachings of the Prophet ﷺ provide specific guidelines on what is considered haram, focusing on certain types of food and substances rather than categorically labeling all unhealthy items as forbidden.