I am the healthiest person I know, and I got cancer

The point is that you have a lot of influence over outcomes. There are mountains of evidence to support that fact, with comparatively easy and accessible interventions ranging from abstaining from smoking, to eating healthy food, to getting exercise. As with everything else in life, though, what you are doing by living healthily is turning the probabilities in your favor. That means that someone with unlucky genetic predispositions, or with an undiagnosed infection/deficiency/toxin exposure etc, might develop cancer despite doing everything in their power to avoid it, while a lucky bon-vivant smoker/drinker/junk foodie might just roll those dice favorably enough times to die of other causes. The point is that you should live your life based on the expected outcome of your actions, rather than on specific example cases, which may be outliers not representative of what you might expect if you follow their lead.

This is one of the things where it matters more how healthy/unpolluted your environment is.

I'd dare to say that a not-so-phisically-active moderate-smoker living in a less polluted environment has way lower cancer risk than a bio-vegan athlete buddhist monk living in a polluted industrial hellhole.

I'd wish we lived in a world where we could actually address chemical, air-particulate +/- microplastics pollution seriously, and stuff like PFOAs that are still used round, without having it be totally overshadowed and drowned in noise by the "fight climate change" crowd or the "extinction rebellion" nutcases.

...like in, I'd rather have a petrol/gas plant to replace a local COAL power plant FAST, than a nuclear alternative that would take 20 years to get funding and have the delayed-as-usual building process finalized. And I'd rather have all the hydro and windpower we can built asap, and we can figure out later if we really care about the western-golden-lyre-bird or whatever going extinct because of dams or windmills. In the end, tbh, I've come to terms with a +5/7 C deg global warming (100y timeframe) happening, but not with me or loved ones dying 20 years earlier of cancer because of chemical and particulate air pollution or god-knows-what from the latest untested and unidentified pan or sportswear coating!

No mention of diet although you hint at it indirectly when you say avoid subburns.

So Copper is used to make melanin the skin pigment which then converts 99.9% of UV radiation into heat. Now if the copper in your diet is going towards the melanin production there is less for Interleukin-2 which helps white blood cells become more accurate. Ironically, people eat more leafy greens (salds) during the summer months when UV levels are highest so there is a seasonal environmental element to factor in as well.

Too much copper though and it will make you paranoid (dopamine-noradrenaline), and the female oestrogen pill (oestrogen) increases or retains more copper in the body which might probably explains some young womens reports of not feeling too brilliant when young and on the pill.

The author is from India. India has been experiencing a wave of changes in the face of a growing middle class. The pollution level in every major cities is just abysmal, there is very little regard for quality control - parts of India in the north are basically covered in toxic fogs for a decent part of the year. Add to that an increasing adoption of plastics, recipes involving frying oil in high temperature and western style take out meals, even the wealthy Indians are not leading as healthy of lifestyle as they might think.

Here is an anecdote - growing up we used to have local festivals in the temples where they would distribute meals in banana leaves almost exclusively in all the temples. Fast forward these have been replaced with single usage low grade plastics and cups which when served hot I honestly fear leech plastic into food. The number of cars in any metropolitan cities have exploded - older forms of transportation like rickshaws are almost gone (not that I am saying I condone the poor rickshawalas having to pull weights twice their own but just setting context). Traditional Indian meals involved less frying and using ghee, which has higher smoke temperature compared to soybean which is also very poor quality.

Legally mandating remote work and adding public transit options and raising the cost of daily useless commute would go a veeeeeery long way. Because the petrol not burned by driving can be used to replace the coal plants.