Table 2.

The 25 topics that were identified from r/loseit. The sample terms were ordered based on their relevance to the topic. The distribution of each topic is calculated on all the posts published by these users.

Label and ID		Most relevant terms	Distribution (probability)
Food or drinks
	T2	water, drink, lot, drinking, make, soda, cut, diet, beer, bit, thing, alcohol	.053
	T11	eat, food, meal, eating, lunch, dinner, hungry, calorie, breakfast, pizza	.051
	T21	food, diet, eating, eat, low, protein, fat, calorie, lot, high, carbs, cico	.049
	T22	veggie, chicken, salad, cheese, add, recipe, make, cook, egg, rice, meat	.048
Health issues
	T5	doctor, body, issue, problem, health, level, pain, energy, effect, surgery	.052
Family or friends
	T6	friend, family, guy, kid, mom, school, husband, life, live, told, girl	.052
Calorie
	T7	calorie, deficit, exercise, tdee, eat, counting, count, eating, daily, mfp	.052
	T8	calorie, chocolate, sugar, sweet, snack, coffee, craving, bar, fruit, cal, cup	.051
Exercise
	T9	run, running, walk, minute, time, walking, mile, step, hour, half, long	.051
	T16	gym, exercise, muscle, workout, start, working, work, body, cardio	.049
Weight change
	T3	lb, year, lost, month, started, pound, back, ago, gained, weight, starting	.052
	T17	weight, lose, loss, fat, body, gain, healthy, bmi, height, normal, range	.049
	T25	week, scale, weight, pound, number, plateau, drop, weighing, daily	.043
Feelings
	T12	thing, work, make, find, lot, time, hard, put, give, won, easy, worry	.051
	T13	goal, hit, progress, end, picture, feel, close, happy, set, time, challenge	.050
	T14	feel, feeling, eating, binge, bad, stop, time, control, hard, stress, struggle	.050
Communication or encouragement
	T1	good, pretty, yeah, luck, lol, idea, feel, kind, sound, guess, bit, haha, stuff	.053
	T10	people, person, health, comment, understand, talk, mental, life, care	.051
	T23	post, read, check, https_www, question, loseit, app, mfp, reddit, http	.048
	T24	great, love, awesome, job, amazing, congrats, hope, sound, glad, similar	.046
Plan or decision
	T4	day, week, back, track, maintenance, couple, plan, log, logging, cheat	.052
	T18	change, time, make, start, long, life, habit, making, thing, choice, healthy	.049
	T20	time, thought, made, felt, wanted, started, back, needed, decided, found	.049
Clothes
	T19	fit, size, clothes, big, wear, buy, pant, bought, short, shirt, dress, store	.049
Time
	T15	today, morning, night, yesterday, work, tomorrow, weekend, day, home	.050